Slime Volley, version 2.4.2

Slime Volley is a 2D arcade-oriented volleyball simulation, in the spirit of
some Java games of the same name.

Two teams, 1-3 players each, try to be the first to get 10 points. This happens
when the one ball touches the floor on the other side of the net.
There can be 1 to 8 balls in game. Once one ball touch the ground, the set ends
and all balls are served again.
Each player use 4 keys, 2 direction keys, one for jump and one for changing its
skin.
You can't move when you're not touching the floor.