diff --git a/Moon.py b/Moon.py
new file mode 100644
index 0000000..02ef740
--- /dev/null
+++ b/Moon.py
@@ -0,0 +1,64 @@
+import pygame
+
+from compute import matmul, rot_2D
+from game import Game
+
+EARTH_RADIUS = 30
+MOON_RADIUS = 10
+MOON_DISTANCE = 100.0
+MOON_ANGLE = 0.01
+
+BLACK = (0, 0, 0)
+BLUE = (0, 0, 255)
+GRAY = (200, 200, 200)
+
+
+class Moon(Game):
+    """Der Mond kreist um die Erde."""
+
+    def __init__(self, title="Moon", fps=60, size=(640, 400)):
+        super().__init__(title, fps, size)
+        self.center_x = size[0] // 2
+        self.center_y = size[1] // 2
+        self.init_positions()
+
+    def init_positions(self):
+        self.position_moon = (MOON_DISTANCE, 0.0)
+        self.rot_moon = rot_2D(MOON_ANGLE)
+
+    def rotate_point(self, position, rotation):
+        result = matmul(rotation, [[position[0]], [position[1]]])
+        return (result[0][0], result[1][0])
+
+    def update_game(self):
+        self.update_positions()
+        return True
+
+    def update_positions(self):
+        self.position_moon = self.rotate_point(self.position_moon, self.rot_moon)
+
+    def to_screen(self, position):
+        return (int(self.center_x + position[0]), int(self.center_y + position[1]))
+
+    def draw_game(self):
+        self.screen.fill(BLACK)
+        self.draw_scene()
+        pygame.display.flip()
+
+    def draw_scene(self):
+        self.draw_earth()
+        self.draw_moon()
+
+    def draw_earth(self):
+        pygame.draw.circle(
+            self.screen, BLUE, (self.center_x, self.center_y), EARTH_RADIUS
+        )
+
+    def draw_moon(self):
+        pygame.draw.circle(
+            self.screen, GRAY, self.to_screen(self.position_moon), MOON_RADIUS
+        )
+
+
+if __name__ == "__main__":
+    Moon().run()
diff --git a/apollo.py b/apollo.py
new file mode 100644
index 0000000..2d0a10a
--- /dev/null
+++ b/apollo.py
@@ -0,0 +1,42 @@
+import pygame
+
+from Moon import MOON_ANGLE, Moon
+from compute import rot_2D
+
+APOLLO_DISTANCE = 40.0
+APOLLO_RADIUS = 5
+APOLLO_ANGLE = -2 * MOON_ANGLE
+RED = (255, 0, 0)
+
+
+class Apollo(Moon):
+    """Apollo kreist gegenläufig mit doppelter Winkelgeschwindigkeit um den Mond."""
+
+    def __init__(self, title="Apollo", fps=60, size=(640, 400)):
+        super().__init__(title, fps, size)
+
+    def init_positions(self):
+        super().init_positions()
+        self.position_apollo = (APOLLO_DISTANCE, 0.0)
+        self.rot_apollo = rot_2D(APOLLO_ANGLE)
+
+    def update_positions(self):
+        super().update_positions()
+        self.position_apollo = self.rotate_point(self.position_apollo, self.rot_apollo)
+
+    def draw_scene(self):
+        super().draw_scene()
+        self.draw_apollo()
+
+    def draw_apollo(self):
+        position = (
+            self.position_moon[0] + self.position_apollo[0],
+            self.position_moon[1] + self.position_apollo[1],
+        )
+        pygame.draw.circle(
+            self.screen, RED, self.to_screen(position), APOLLO_RADIUS
+        )
+
+
+if __name__ == "__main__":
+    Apollo().run()
diff --git a/game.py b/game.py
new file mode 100644
index 0000000..b245678
--- /dev/null
+++ b/game.py
@@ -0,0 +1,51 @@
+import pygame
+
+class Game:
+
+    def __init__(self, title, fps=60, size=(640, 400)):
+        self.title = title
+        self.fps = fps
+        self.size = size
+        self.clock = pygame.time.Clock()
+        self.dt = 0
+        self.screen = None
+
+    def init_game(self):
+        pygame.init()
+        pygame.display.set_caption(self.title)
+        self.screen = pygame.display.set_mode(self.size)
+
+    def game_loop(self):
+        while True:
+            # Berechnung der Zeitdifferenz seit dem letzten Frame
+            self.dt = self.clock.tick(self.fps) / 1000
+            if self.event_handling() == False:
+                break
+            if self.update_game() == False:
+                break
+            self.draw_game()
+
+    def exit_game(self):
+        pygame.quit()
+
+    def event_handling(self):  # bleibt in der Unterklasse unverändert
+        for event in pygame.event.get():
+            if not self.handle_event(event):
+                return False
+        return True
+
+    def handle_event(self, event):  # wird in der Unterklasse überschrieben
+        if event.type == pygame.QUIT:
+            return False
+        return True
+
+    def update_game(self):
+        return True
+
+    def draw_game(self):
+        pygame.display.flip()
+
+    def run(self):
+        self.init_game()
+        self.game_loop()
+        self.exit_game()
\ No newline at end of file