Swallow the ball

"Swallow the ball" is a familiar snake game where the snake looks like sports balls moving around a sports field.
Start "Swallow the ball" as a small snake and get bigger by eating the balls in your path.
The game offers two options - "classic" and "advanced. In the classic level, the playing field is limited by a frame, in which in no case you can crash into, otherwise the game will be over.
On the advanced level the field is not limited by a frame, but on the way of your snake there will be obstacles that you can't crash into.
Grow the longest snake and fill the field with sports balls!