diff --git a/build/test/cache/test_duellist_spielesammlung_projekt.c b/build/test/cache/test_duellist_spielesammlung_projekt.c
index e0df2e2..b93b6e1 100644
--- a/build/test/cache/test_duellist_spielesammlung_projekt.c
+++ b/build/test/cache/test_duellist_spielesammlung_projekt.c
@@ -962,4 +962,530 @@ void test_calculate_mines_HeightWidthFinal(void)
 
    ), (UNITY_UINT)(423), UNITY_DISPLAY_STYLE_INT);
 
+}
+
+void test_generateRandomNumber_withinValidRange(void)
+
+{
+
+
+
+
+
+
+
+    int result = zufallszahl(1, 100);
+
+
+
+
+
+    do {if ((result >= 1 && result <= 100)) {} else {UnityFail( ((" Expected TRUE Was FALSE")), (UNITY_UINT)((UNITY_UINT)(459)));}} while(0);
+
+}
+
+
+
+void test_addition(void)
+
+{
+
+
+
+    int a = 5;
+
+    int b = 10;
+
+
+
+
+
+    int result = add(a, b);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((15)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(472), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_subtraction(void)
+
+{
+
+
+
+    int a = 15;
+
+    int b = 10;
+
+
+
+
+
+    int result = minus(a, b);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((5)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(485), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+
+
+void test_multiplication(void)
+
+{
+
+
+
+    int a = 5;
+
+    int b = 10;
+
+
+
+
+
+    int result = mal(a, b);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((50)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(499), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_division(void)
+
+{
+
+
+
+    int a = 15;
+
+    int b = 3;
+
+
+
+
+
+    int result = durch(a, b);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((5)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(512), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_division_byZero_returnsZero(void)
+
+{
+
+
+
+    int num1 = 8;
+
+    int num2 = 0;
+
+
+
+
+
+    int result = durch(num1, num2);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((0)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(525), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_modulo(void)
+
+{
+
+
+
+    int a = 15;
+
+    int b = 7;
+
+
+
+
+
+    int result = modulo(a, b);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((1)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(538), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_compare_equalNumbers(void)
+
+{
+
+
+
+    int a = 5;
+
+    int b = 5;
+
+
+
+
+
+    int result = compare(a, b);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((0)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(551), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_compare_aLessThanB(void)
+
+{
+
+
+
+    int a = 3;
+
+    int b = 8;
+
+
+
+
+
+    int result = compare(a, b);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((-1)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(564), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_compare_aGreaterThanB(void)
+
+{
+
+
+
+    int a = 10;
+
+    int b = 7;
+
+
+
+
+
+    int result = compare(a, b);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((1)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(577), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_exponentiation(void)
+
+{
+
+
+
+    int base = 2;
+
+    int expo = 3;
+
+
+
+
+
+    int result = exponent(base, expo);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((8)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(590), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_exponentiation_negativeExponent(void)
+
+{
+
+
+
+    int base = 2;
+
+    int expo = -3;
+
+
+
+
+
+    int result = exponent(base, expo);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((0)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(603), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_squareRoot_validNumber(void)
+
+{
+
+
+
+    int number = 25;
+
+
+
+
+
+    int result = squareRoot(number);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((5)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(615), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_squareRoot_negativeNumber(void)
+
+{
+
+
+
+    int number = -5;
+
+
+
+
+
+    int result = squareRoot(number);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((0)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(627), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_displayResult_correctResult(void)
+
+{
+
+
+
+    int correctAnswers = 3;
+
+    int totalQuestions = 5;
+
+
+
+
+
+    displayResult(correctAnswers, totalQuestions);
+
+
+
+
+
+
+
+}
+
+
+
+void test_displayMenu_validMenu(void)
+
+{
+
+
+
+
+
+
+
+
+
+
+
+    displayMenu();
+
+}
+
+
+
+void test_getUserChoice_invalidInput(void)
+
+{
+
+
+
+    freopen("invalid_input.txt", "r", 
+
+                                     (&_iob[0])
+
+                                          );
+
+
+
+
+
+    int result = getUserChoice();
+
+
+
+
+
+
+
+}
+
+
+
+void test_playGame_correctResult(void)
+
+{
+
+
+
+
+
+
+
+    playGame();
+
+}
+
+
+
+void test_getUserAnswer_invalidInput(void)
+
+{
+
+
+
+    freopen("invalid_input.txt", "r", 
+
+                                     (&_iob[0])
+
+                                          );
+
+
+
+
+
+    int result = getUserAnswer();
+
+
+
+
+
+
+
 }
diff --git a/build/test/out/c/duellist-spielesammlung-projekt.o b/build/test/out/c/duellist-spielesammlung-projekt.o
index 2e7166a..c91c583 100644
Binary files a/build/test/out/c/duellist-spielesammlung-projekt.o and b/build/test/out/c/duellist-spielesammlung-projekt.o differ
diff --git a/build/test/out/c/test_duellist_spielesammlung_projekt.o b/build/test/out/c/test_duellist_spielesammlung_projekt.o
index 103ed61..0cdc50e 100644
Binary files a/build/test/out/c/test_duellist_spielesammlung_projekt.o and b/build/test/out/c/test_duellist_spielesammlung_projekt.o differ
diff --git a/build/test/out/c/test_duellist_spielesammlung_projekt_runner.o b/build/test/out/c/test_duellist_spielesammlung_projekt_runner.o
index 9dcf738..dcec722 100644
Binary files a/build/test/out/c/test_duellist_spielesammlung_projekt_runner.o and b/build/test/out/c/test_duellist_spielesammlung_projekt_runner.o differ
diff --git a/build/test/out/test_duellist_spielesammlung_projekt.out b/build/test/out/test_duellist_spielesammlung_projekt.out
index 75502a8..83b2798 100644
Binary files a/build/test/out/test_duellist_spielesammlung_projekt.out and b/build/test/out/test_duellist_spielesammlung_projekt.out differ
diff --git a/build/test/preprocess/files/test_duellist_spielesammlung_projekt.c b/build/test/preprocess/files/test_duellist_spielesammlung_projekt.c
index e0df2e2..b93b6e1 100644
--- a/build/test/preprocess/files/test_duellist_spielesammlung_projekt.c
+++ b/build/test/preprocess/files/test_duellist_spielesammlung_projekt.c
@@ -962,4 +962,530 @@ void test_calculate_mines_HeightWidthFinal(void)
 
    ), (UNITY_UINT)(423), UNITY_DISPLAY_STYLE_INT);
 
+}
+
+void test_generateRandomNumber_withinValidRange(void)
+
+{
+
+
+
+
+
+
+
+    int result = zufallszahl(1, 100);
+
+
+
+
+
+    do {if ((result >= 1 && result <= 100)) {} else {UnityFail( ((" Expected TRUE Was FALSE")), (UNITY_UINT)((UNITY_UINT)(459)));}} while(0);
+
+}
+
+
+
+void test_addition(void)
+
+{
+
+
+
+    int a = 5;
+
+    int b = 10;
+
+
+
+
+
+    int result = add(a, b);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((15)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(472), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_subtraction(void)
+
+{
+
+
+
+    int a = 15;
+
+    int b = 10;
+
+
+
+
+
+    int result = minus(a, b);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((5)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(485), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+
+
+void test_multiplication(void)
+
+{
+
+
+
+    int a = 5;
+
+    int b = 10;
+
+
+
+
+
+    int result = mal(a, b);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((50)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(499), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_division(void)
+
+{
+
+
+
+    int a = 15;
+
+    int b = 3;
+
+
+
+
+
+    int result = durch(a, b);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((5)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(512), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_division_byZero_returnsZero(void)
+
+{
+
+
+
+    int num1 = 8;
+
+    int num2 = 0;
+
+
+
+
+
+    int result = durch(num1, num2);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((0)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(525), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_modulo(void)
+
+{
+
+
+
+    int a = 15;
+
+    int b = 7;
+
+
+
+
+
+    int result = modulo(a, b);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((1)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(538), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_compare_equalNumbers(void)
+
+{
+
+
+
+    int a = 5;
+
+    int b = 5;
+
+
+
+
+
+    int result = compare(a, b);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((0)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(551), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_compare_aLessThanB(void)
+
+{
+
+
+
+    int a = 3;
+
+    int b = 8;
+
+
+
+
+
+    int result = compare(a, b);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((-1)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(564), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_compare_aGreaterThanB(void)
+
+{
+
+
+
+    int a = 10;
+
+    int b = 7;
+
+
+
+
+
+    int result = compare(a, b);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((1)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(577), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_exponentiation(void)
+
+{
+
+
+
+    int base = 2;
+
+    int expo = 3;
+
+
+
+
+
+    int result = exponent(base, expo);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((8)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(590), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_exponentiation_negativeExponent(void)
+
+{
+
+
+
+    int base = 2;
+
+    int expo = -3;
+
+
+
+
+
+    int result = exponent(base, expo);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((0)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(603), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_squareRoot_validNumber(void)
+
+{
+
+
+
+    int number = 25;
+
+
+
+
+
+    int result = squareRoot(number);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((5)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(615), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_squareRoot_negativeNumber(void)
+
+{
+
+
+
+    int number = -5;
+
+
+
+
+
+    int result = squareRoot(number);
+
+
+
+
+
+    UnityAssertEqualNumber((UNITY_INT)((0)), (UNITY_INT)((result)), (
+
+   ((void *)0)
+
+   ), (UNITY_UINT)(627), UNITY_DISPLAY_STYLE_INT);
+
+}
+
+
+
+void test_displayResult_correctResult(void)
+
+{
+
+
+
+    int correctAnswers = 3;
+
+    int totalQuestions = 5;
+
+
+
+
+
+    displayResult(correctAnswers, totalQuestions);
+
+
+
+
+
+
+
+}
+
+
+
+void test_displayMenu_validMenu(void)
+
+{
+
+
+
+
+
+
+
+
+
+
+
+    displayMenu();
+
+}
+
+
+
+void test_getUserChoice_invalidInput(void)
+
+{
+
+
+
+    freopen("invalid_input.txt", "r", 
+
+                                     (&_iob[0])
+
+                                          );
+
+
+
+
+
+    int result = getUserChoice();
+
+
+
+
+
+
+
+}
+
+
+
+void test_playGame_correctResult(void)
+
+{
+
+
+
+
+
+
+
+    playGame();
+
+}
+
+
+
+void test_getUserAnswer_invalidInput(void)
+
+{
+
+
+
+    freopen("invalid_input.txt", "r", 
+
+                                     (&_iob[0])
+
+                                          );
+
+
+
+
+
+    int result = getUserAnswer();
+
+
+
+
+
+
+
 }
diff --git a/build/test/results/test_duellist_spielesammlung_projekt.pass b/build/test/results/test_duellist_spielesammlung_projekt.pass
index d76a599..47b66dd 100644
--- a/build/test/results/test_duellist_spielesammlung_projekt.pass
+++ b/build/test/results/test_duellist_spielesammlung_projekt.pass
@@ -119,12 +119,122 @@
   :line: 412
   :message: ''
   :unity_test_time: 0
+- :test: test_generateRandomNumber_withinValidRange
+  :line: 451
+  :message: ''
+  :unity_test_time: 0
+- :test: test_addition
+  :line: 462
+  :message: ''
+  :unity_test_time: 0
+- :test: test_subtraction
+  :line: 475
+  :message: ''
+  :unity_test_time: 0
+- :test: test_multiplication
+  :line: 489
+  :message: ''
+  :unity_test_time: 0
+- :test: test_division
+  :line: 502
+  :message: ''
+  :unity_test_time: 0
+- :test: test_division_byZero_returnsZero
+  :line: 515
+  :message: ''
+  :unity_test_time: 0
+- :test: test_modulo
+  :line: 528
+  :message: ''
+  :unity_test_time: 0
+- :test: test_compare_equalNumbers
+  :line: 541
+  :message: ''
+  :unity_test_time: 0
+- :test: test_compare_aLessThanB
+  :line: 554
+  :message: ''
+  :unity_test_time: 0
+- :test: test_compare_aGreaterThanB
+  :line: 567
+  :message: ''
+  :unity_test_time: 0
+- :test: test_exponentiation
+  :line: 580
+  :message: ''
+  :unity_test_time: 0
+- :test: test_exponentiation_negativeExponent
+  :line: 593
+  :message: ''
+  :unity_test_time: 0
+- :test: test_squareRoot_validNumber
+  :line: 606
+  :message: ''
+  :unity_test_time: 0
+- :test: test_squareRoot_negativeNumber
+  :line: 618
+  :message: ''
+  :unity_test_time: 0
+- :test: test_displayResult_correctResult
+  :line: 630
+  :message: ''
+  :unity_test_time: 0
+- :test: test_displayMenu_validMenu
+  :line: 643
+  :message: ''
+  :unity_test_time: 0
+- :test: test_getUserChoice_invalidInput
+  :line: 653
+  :message: ''
+  :unity_test_time: 0
+- :test: test_playGame_correctResult
+  :line: 665
+  :message: ''
+  :unity_test_time: 0
+- :test: test_getUserAnswer_invalidInput
+  :line: 673
+  :message: ''
+  :unity_test_time: 0
 :failures: []
 :ignores: []
 :counts:
-  :total: 29
-  :passed: 29
+  :total: 48
+  :passed: 48
   :failed: 0
   :ignored: 0
-:stdout: []
-:time: 0.13763090001884848
+:stdout:
+- Division durch Null nicht erlaubt. Gib eine andere Zahl ein.
+- Negative Exponenten werden nicht unterstützt.
+- Die Quadratwurzel aus einer negativen Zahl ist nicht definiert.
+- ''
+- 'Spiel beendet. Ergebnis: 3 von 5 Fragen richtig beantwortet.'
+- ''
+- 'Hauptmenü:'
+- 1. Spiel starten
+- 2. Beenden
+- 'Auswahl treffen: '
+- Ungültige Eingabe. Bitte eine Zahl eingeben.
+- ''
+- 'Frage 1: Was ist 3 = 10?'
+- Ungültige Eingabe. Bitte eine Zahl eingeben.
+- 'Falsch. Die richtige Antwort ist: -1'
+- ''
+- 'Frage 2: Was ist 7 - 5?'
+- Ungültige Eingabe. Bitte eine Zahl eingeben.
+- 'Falsch. Die richtige Antwort ist: 2'
+- ''
+- 'Frage 3: Was ist 10 / 9?'
+- Ungültige Eingabe. Bitte eine Zahl eingeben.
+- 'Falsch. Die richtige Antwort ist: 1'
+- ''
+- 'Frage 4: Was ist 6 % 8?'
+- Ungültige Eingabe. Bitte eine Zahl eingeben.
+- 'Falsch. Die richtige Antwort ist: 6'
+- ''
+- 'Frage 5: Was ist 8 - 2?'
+- Ungültige Eingabe. Bitte eine Zahl eingeben.
+- 'Falsch. Die richtige Antwort ist: 6'
+- ''
+- 'Spiel beendet. Ergebnis: 0 von 5 Fragen richtig beantwortet.'
+- Ungültige Eingabe. Bitte eine Zahl eingeben.
+:time: 0.024828299996443093
diff --git a/build/test/runners/test_duellist_spielesammlung_projekt_runner.c b/build/test/runners/test_duellist_spielesammlung_projekt_runner.c
index 3817293..a71a0a8 100644
--- a/build/test/runners/test_duellist_spielesammlung_projekt_runner.c
+++ b/build/test/runners/test_duellist_spielesammlung_projekt_runner.c
@@ -39,6 +39,25 @@ extern void test_calculate_mines_HeightWidthAgan(void);
 extern void test_calculate_mines_HeightWidthRoundUp(void);
 extern void test_calculate_mines_HeightWidthNoRound(void);
 extern void test_calculate_mines_HeightWidthFinal(void);
+extern void test_generateRandomNumber_withinValidRange(void);
+extern void test_addition(void);
+extern void test_subtraction(void);
+extern void test_multiplication(void);
+extern void test_division(void);
+extern void test_division_byZero_returnsZero(void);
+extern void test_modulo(void);
+extern void test_compare_equalNumbers(void);
+extern void test_compare_aLessThanB(void);
+extern void test_compare_aGreaterThanB(void);
+extern void test_exponentiation(void);
+extern void test_exponentiation_negativeExponent(void);
+extern void test_squareRoot_validNumber(void);
+extern void test_squareRoot_negativeNumber(void);
+extern void test_displayResult_correctResult(void);
+extern void test_displayMenu_validMenu(void);
+extern void test_getUserChoice_invalidInput(void);
+extern void test_playGame_correctResult(void);
+extern void test_getUserAnswer_invalidInput(void);
 
 
 /*=======Mock Management=====*/
@@ -132,6 +151,25 @@ int main(void)
   run_test(test_calculate_mines_HeightWidthRoundUp, "test_calculate_mines_HeightWidthRoundUp", 384);
   run_test(test_calculate_mines_HeightWidthNoRound, "test_calculate_mines_HeightWidthNoRound", 398);
   run_test(test_calculate_mines_HeightWidthFinal, "test_calculate_mines_HeightWidthFinal", 412);
+  run_test(test_generateRandomNumber_withinValidRange, "test_generateRandomNumber_withinValidRange", 451);
+  run_test(test_addition, "test_addition", 462);
+  run_test(test_subtraction, "test_subtraction", 475);
+  run_test(test_multiplication, "test_multiplication", 489);
+  run_test(test_division, "test_division", 502);
+  run_test(test_division_byZero_returnsZero, "test_division_byZero_returnsZero", 515);
+  run_test(test_modulo, "test_modulo", 528);
+  run_test(test_compare_equalNumbers, "test_compare_equalNumbers", 541);
+  run_test(test_compare_aLessThanB, "test_compare_aLessThanB", 554);
+  run_test(test_compare_aGreaterThanB, "test_compare_aGreaterThanB", 567);
+  run_test(test_exponentiation, "test_exponentiation", 580);
+  run_test(test_exponentiation_negativeExponent, "test_exponentiation_negativeExponent", 593);
+  run_test(test_squareRoot_validNumber, "test_squareRoot_validNumber", 606);
+  run_test(test_squareRoot_negativeNumber, "test_squareRoot_negativeNumber", 618);
+  run_test(test_displayResult_correctResult, "test_displayResult_correctResult", 630);
+  run_test(test_displayMenu_validMenu, "test_displayMenu_validMenu", 643);
+  run_test(test_getUserChoice_invalidInput, "test_getUserChoice_invalidInput", 653);
+  run_test(test_playGame_correctResult, "test_playGame_correctResult", 665);
+  run_test(test_getUserAnswer_invalidInput, "test_getUserAnswer_invalidInput", 673);
 
   return UnityEnd();
 }
diff --git a/src/main/duellist-spielesammlung-projekt.c b/src/main/duellist-spielesammlung-projekt.c
index 62c5597..75e49d3 100644
--- a/src/main/duellist-spielesammlung-projekt.c
+++ b/src/main/duellist-spielesammlung-projekt.c
@@ -384,3 +384,164 @@ int minesweeper() {
     return 1;
 }
 
+
+/*------------------------------------------------------------------------------------------*/
+
+int zufallszahl(int min, int max) 
+{return rand() % (max - min + 1) + min;}
+
+int add(int a, int b) 
+{return a + b;}
+
+int minus(int a, int b) 
+{return a - b;}
+
+int mal(int a, int b) 
+{return a * b;}
+
+int durch(int a, int b) {
+    if (b != 0) {
+        return a / b;
+    } else {
+        printf("Division durch Null nicht erlaubt. Gib eine andere Zahl ein.\n");
+        return 0;
+    }
+}
+
+int modulo(int a, int b) {
+    if (b != 0) {
+        return a % b;
+    } else {
+        printf("Modulo durch Null nicht erlaubt. Gib eine andere Zahl ein.\n");
+        return 0;
+    }
+}
+
+int compare(int a, int b) {
+    if (a == b) {
+        return 0;
+    } else if (a < b) {
+        return -1;
+    } else {
+        return 1;
+    }
+}
+
+int exponent(int base, int expo){
+    if (expo < 0) {
+        printf("Negative Exponenten werden nicht unterstützt.\n");
+        return 0;
+    }
+    int result = 1;
+    for (int i = 0; i < expo; ++i) {
+        result *= base;
+    }
+    return result;
+}
+
+int squareRoot(int number) {
+    if (number >= 0) {
+        return (int)sqrt(number);
+    } else {
+        printf("Die Quadratwurzel aus einer negativen Zahl ist nicht definiert.\n");
+        return 0;
+    }
+}
+
+void displayMenu() {
+    printf("\nHauptmenü:\n1. Spiel starten\n2. Beenden\nAuswahl treffen: ");
+}
+
+int getUserChoice() {
+    int choice;
+    if (scanf("%d", &choice) != 1) {
+        printf("Ungültige Eingabe. Bitte eine Zahl eingeben.\n");
+        // Optional: Hier könntest du die Funktion rekursiv aufrufen oder einen Standardwert zurückgeben.
+    }
+    return choice;
+}
+
+void playGame() {
+    int correctAnswers = 0;
+    int totalQuestions = 5; // Anzahl der Fragen im Spiel
+
+    for (int i = 0; i < totalQuestions; ++i) {
+        int num1 = zufallszahl(1, 10);
+        int num2 = zufallszahl(1, 10);
+        int operation = zufallszahl(1, 8);
+
+        int result;
+        char operator;
+
+        switch (operation) {
+            case 1:
+                result = add(num1, num2);
+                operator = '+';
+                break;
+            case 2:
+                result = minus(num1, num2);
+                operator = '-';
+                break;
+            case 3:
+                result = mal(num1, num2);
+                operator = '*';
+                break;
+            case 4:
+                result = durch(num1, num2);
+                operator = '/';
+                break;
+            case 5:
+                result = modulo(num1, num2);
+                operator = '%';
+                break;
+            case 6:
+                result = compare(num1, num2);
+                operator = '=';
+                break;
+            case 7:
+                result = exponent(num1, num2);
+                operator = '^';
+                break;
+            case 8:
+                result = squareRoot(num1);
+                operator= "Wurzel";
+                break;
+            default:
+                printf("Ungültige Operation.\n");
+                break;
+
+        }
+
+        printf("\nFrage %d: Was ist %d %c %d?\n", i + 1, num1, operator, num2);
+
+        int userAnswer = getUserAnswer();
+
+        if (userAnswer == result) {
+            printf("Richtig!\n");
+            correctAnswers++;
+        } else {
+            printf("Falsch. Die richtige Antwort ist: %d\n", result);
+        }
+    }
+
+    displayResult(correctAnswers, totalQuestions);
+}
+
+int getUserAnswer() {
+    int answer;
+    if (scanf("%d", &answer) != 1) {
+        printf("Ungültige Eingabe. Bitte eine Zahl eingeben.\n");
+        // Optional: Hier könntest du die Funktion rekursiv aufrufen oder einen Standardwert zurückgeben.
+    }
+    return answer;
+}
+
+void displayResult(int correctAnswers, int totalQuestions) {
+    printf("\nSpiel beendet. Ergebnis: %d von %d Fragen richtig beantwortet.\n", correctAnswers, totalQuestions);
+}
+
+
+
+
+
+
diff --git a/src/main/duellist-spielesammlung-projekt.h b/src/main/duellist-spielesammlung-projekt.h
index fe4db1d..72dc2b8 100644
--- a/src/main/duellist-spielesammlung-projekt.h
+++ b/src/main/duellist-spielesammlung-projekt.h
@@ -40,6 +40,7 @@ Player playRockPaperScissors();
 
 
 
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <time.h>
@@ -57,5 +58,51 @@ int calculate_mines(int height, int width);
 char** create_minefield(int height, int width, char within);
 void distribute_mines(char** mines, int height, int width, int num_mines);
 int minesweeper();
+
+
+
+
+
+
+
+
+
+int zufallszahl(int min, int max);
+int add(int a, int b);
+int minus(int a, int b);
+int mal(int a, int b);
+int durch(int a, int b);
+int modulo(int a, int b);
+int compare(int a, int b);
+int exponent(int base, int exponent);
+int squareRoot(int number);
+void displayMenu();
+int getUserChoice();
+int getUserAnswer();
+void displayResult(int correctAnswers, int totalQuestions);
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
 
 #endif  // DUEELIST_SPIELESAMMLUNG_PROJEKT_H
\ No newline at end of file
diff --git a/src/test/test_duellist_spielesammlung_projekt.c b/src/test/test_duellist_spielesammlung_projekt.c
index a0d4547..b97a997 100644
--- a/src/test/test_duellist_spielesammlung_projekt.c
+++ b/src/test/test_duellist_spielesammlung_projekt.c
@@ -422,4 +422,328 @@ void test_calculate_mines_HeightWidthFinal(void)
     /* assert */
     TEST_ASSERT_EQUAL_INT(expected, result);
 }
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+void test_generateRandomNumber_withinValidRange(void)
+{
+    /* arrange */
+
+    /* act */
+    int result = zufallszahl(1, 100);
+
+    /* assert */
+    TEST_ASSERT_TRUE(result >= 1 && result <= 100);
+}
+
+void test_addition(void)
+{
+    /* arrange */
+    int a = 5;
+    int b = 10;
+
+    /* act */
+    int result = add(a, b);
+
+    /* assert */
+    TEST_ASSERT_EQUAL_INT(15, result);
+}
+
+void test_subtraction(void)
+{
+    /* arrange */
+    int a = 15;
+    int b = 10;
+
+    /* act */
+    int result = minus(a, b);
+
+    /* assert */
+    TEST_ASSERT_EQUAL_INT(5, result);
+}
+
+
+void test_multiplication(void)
+{
+    /* arrange */
+    int a = 5;
+    int b = 10;
+
+    /* act */
+    int result = mal(a, b);
+
+    /* assert */
+    TEST_ASSERT_EQUAL_INT(50, result);
+}
+
+void test_division(void)
+{
+    /* arrange */
+    int a = 15;
+    int b = 3;
+
+    /* act */
+    int result = durch(a, b);
+
+    /* assert */
+    TEST_ASSERT_EQUAL_INT(5, result);
+}
+
+void test_division_byZero_returnsZero(void)
+{
+    /* arrange */
+    int num1 = 8;
+    int num2 = 0;
+
+    /* act */
+    int result = durch(num1, num2);
+
+    /* assert */
+    TEST_ASSERT_EQUAL_INT(0, result);
+}
+
+void test_modulo(void)
+{
+    /* arrange */
+    int a = 15;
+    int b = 7;
+
+    /* act */
+    int result = modulo(a, b);
+
+    /* assert */
+    TEST_ASSERT_EQUAL_INT(1, result);
+}
+
+void test_compare_equalNumbers(void)
+{
+    /* arrange */
+    int a = 5;
+    int b = 5;
+
+    /* act */
+    int result = compare(a, b);
+
+    /* assert */
+    TEST_ASSERT_EQUAL_INT(0, result);
+}
+
+void test_compare_aLessThanB(void)
+{
+    /* arrange */
+    int a = 3;
+    int b = 8;
+
+    /* act */
+    int result = compare(a, b);
+
+    /* assert */
+    TEST_ASSERT_EQUAL_INT(-1, result);
+}
+
+void test_compare_aGreaterThanB(void)
+{
+    /* arrange */
+    int a = 10;
+    int b = 7;
+
+    /* act */
+    int result = compare(a, b);
+
+    /* assert */
+    TEST_ASSERT_EQUAL_INT(1, result);
+}
+
+void test_exponentiation(void)
+{
+    /* arrange */
+    int base = 2;
+    int expo = 3;
+
+    /* act */
+    int result = exponent(base, expo);
+
+    /* assert */
+    TEST_ASSERT_EQUAL_INT(8, result);
+}
+
+void test_exponentiation_negativeExponent(void)
+{
+    /* arrange */
+    int base = 2;
+    int expo = -3;
+
+    /* act */
+    int result = exponent(base, expo);
+
+    /* assert */
+    TEST_ASSERT_EQUAL_INT(0, result);
+}
+
+void test_squareRoot_validNumber(void)
+{
+    /* arrange */
+    int number = 25;
+
+    /* act */
+    int result = squareRoot(number);
+
+    /* assert */
+    TEST_ASSERT_EQUAL_INT(5, result);
+}
+
+void test_squareRoot_negativeNumber(void)
+{
+    /* arrange */
+    int number = -5;
+
+    /* act */
+    int result = squareRoot(number);
+
+    /* assert */
+    TEST_ASSERT_EQUAL_INT(0, result);
+}
+
+void test_displayResult_correctResult(void)
+{
+    /* arrange */
+    int correctAnswers = 3;
+    int totalQuestions = 5;
+
+    /* act */
+    displayResult(correctAnswers, totalQuestions);
+
+    /* assert */
+    
+}
+
+void test_displayMenu_validMenu(void)
+{
+    /* arrange */
+
+    /* act */
+    // Since displayMenu() only prints to the console, we can't use TEST_ASSERT.
+    // Manually verify the output in the console during test execution.
+    displayMenu();
+}
+
+void test_getUserChoice_invalidInput(void)
+{
+    /* arrange */
+    freopen("invalid_input.txt", "r", stdin);
+
+    /* act */
+    int result = getUserChoice();
+
+    /* assert */
+
+}
+
+void test_playGame_correctResult(void)
+{
+    /* arrange */
+
+    /* act */
+    playGame();
+}
+
+void test_getUserAnswer_invalidInput(void)
+{
+    /* arrange */
+    freopen("invalid_input.txt", "r", stdin);
+
+    /* act */
+    int result = getUserAnswer();
+
+    /* assert */
+    
+}
+
+
+
+
+
+
+
+
+
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+
+
+
+
+
+
+
+
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+
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+
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+
+
+
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+
+
+
 #endif // TEST