Very very very very very very very very hard game. Press space or up to jump and right/left arrow keys to move the other way. Gravity can point in any direction. You attack automatically. You can get hit by bullets 10 times before dying. When you touch the edge you go to your mouse pointer. When you touch the boss, you instantly die.
It was easy to code, and I don't even think it is possible to survive over twenty seconds. Warning: Bright flashy distracting lights. Spam the green flag for cool effect.