Holy mackerel, this one's a doozy. The object of this game is to avoid obstacles and the edge while traveling at high velocities. You are the blue dot. Avoid the green dots. Arrow keys to move. WASD support to come, but I was stupid and lazy. Blame me. Once green flag is clicked, enter your difficulty. This determines how many times a second an obstacle will be spawned. Use a number. Zero or a non-number will make the game spawn enemies as fast as possible. Click the "GO!" button after entering difficulty. A countdown will appear, after which the word "GO!" will flash again for an eighth of a second. Then the game starts. YOU ARE ALWAYS MOVING.
Everything by me. :D