Thanx for the PC build, I love that kind of games. If it's not so boring, can you make a 32bit one (for now I've played alone on a 64bit virtual machine)?
A little bug: the goal on the right can be bypassed by the snakes.
A suggestion: to avoid the gameplay stuck at the borders, you can add
a pitch external layer for snakes only. In other words, the ball remain
in the pitch lines, the snakes not. Some as for the HaxBall game. Here a
video if you don't know it: