You can use wasd or the arrow keys, it does not make a difference. The value at the top of the screen is your mass. You begin with 75 mass and you lose if it goes under 0. Collect the greenish balls and avoid the redish ones. The object of the game is not to grow the size of your ball, but to survive as long as you can. The seconds you have survived is in the bottom right corner and the high score is retained.
Jake Waitze update 11-12-2015: i changed the high score to a variable stored in cloud data, so everybody can compete now.
