Try to survive for as long as you can! You control a little block at the bottom of the screen; pressing "space" you add new block at the top; when a row is completed, it is destroyed. To stay alive you must have good reflexis and speed; good luck!
p.s. don't even try the easy difficulty: it's only for noobs! :-)
Move the hero at the bottom of the screen with LEFT and RIGHT arrows keys; shot a block with SPACE; when a row of blocks is completed, it is destroyed; the aim of the game is to survive as long as you can;
P.S: the leaderboard options don't work because I have removed the ads.