## Description
_Kollision_ is a small arcade game. A room is filled with red balls, moving
with constant speed and bounce of walls. If the red balls collide with each
other, they change impulse (their speed) and direction according to the angles
they hit. The player controls a blue ball freely with the mouse and has to
avoid any contact with the other balls. If there is a contact, the game ends.
The goal is simple: survive as long as possible.
After certain amount of time, an additional red ball is added to the game,
making it more difficult to avoid the contact. There are three difficulty
levels, which differ in the speed the red balls are moving. There is a high-
score table with separate scores for each of the difficulty level.
Kollision