This is a fun little game and it has been known since dos time! Any way to move the tank just use the up down left right keys. To restart the level hit the escape key to undo you last move hit the backspace key and to go to another level hit the f1 key! Now to warp to another level you must have the code for that level(displayed at top). The key to this game is to push all blocks onto the green spaces! Enjoy!