The rules are very simple:
There is the black ball which automatically moves across green circle surface. When it collides with red block the game is over. So the goal is not to touch red blocks as long as possible.
Tap the screen to jump. You can jump several times at once but you can not be "in the air" for more than 3 seconds.
You can destroy red blocks by colliding them with blue ball. Also you get extra points when red block gets destroyed.
Please report any issues in the comments section. Ideas and suggestions would also be appreciated :)