Press up while on the ground to jump, press space mid air to do a trick! Press down while on the ground to crouch. This does nothing but make you look weird. Coins sometimes float across the sky. Touch those, but don't touch the things on the ground. The game is infinite... I think... ALSO I think its probably better to play in full screen, idk why, but I'm pretty sure full screen is better. When I tested in window mode I saw a strange jittering effect, but in full screen it wasn't as bad.
I used this video https://youtu.be/5hbqZOL5rYw to help make the moving background. I used https://youtu.be/9zn9t48cCug to make the jump and gravity. and also I use this to do the high score thing https://youtu.be/oBhKW3w02NY