Collision Course is an arcade-style matching game. The player must stop the gems on the left from colliding with those on the right by clicking on matching gems to destroy them. The space bar performs a lightning strike that destroys all the gems on the screen. The player starts with 5 lives and 3 charges of lightning. If it seems easy at first, don't be deceived. It gets much faster and harder if you make it to higher levels! =)