Here are green and red circles on the universe.
And laser bar on the center.
Let green circle pass through laser bar and let red circle not pass by avoiding the red circle.
If green circle passes through laser bar, then 1 score will be increased.
If red circle passes through laser bar, then 1 life will be decreased.
Drag laser bar upside and downside well with finger.
upside, downside fighting!
Compare your score with other's in global leaderboard.