About 10 years ago I did my first Blender project:
Hochablass Kuhsee in my hometown Augsburg:
https://blenderartists.org/t/hochablass-kuhsee-augsburg
Now I revisited Blender and did my 1st little game in it as Tribute to Marble Madness, the game I played endlessly as kid on holidays in Italy:
Marble and Ball:
https://blenderartists.org/t/marble-and-ball
Gameplay of all 16 Levels:
Rope Physics:
Results of my experiments with gyroscopic precession in Blender:
Gyro and Helicopter (with rope winch) in Drone City with traffic
https://blenderartists.org/t/gyroscope/1406680/30
Helicopter Alouette II Christmas Special:
https://blenderartists.org/t/gyroscope/1406680/35
3rd Person ball Controller Template
https://blenderartists.org/t/how-to-3rd-person-ball-controller-that-can-look-up-and-down/1440546/42
SuperGuepard Aircraft
https://blenderartists.org/t/upbge-0-3-superguepard-aircraft/1446730
HeadTracking:
Testflight in Venice (freeware scenery):
SailBoat Physics Game:
https://blenderartists.org/t/upbge-0-3-sailboat-physics/1480435/3
Kayak Physics Game:
https://blenderartists.org/t/upbge-0-3-kayak-physics-game/1483914
Rubiks Cube:
https://blenderartists.org/t/rubiks-cube-upbge-0-3/1486007
Cuboid Rotation Game:
https://blenderartists.org/t/cuboid-rotation-on-a-plane-game-upbge-0-3/1485670/10