Slimes are attacking and you must defend. Press 1 and wait 1 second. a knight will spawn at your mouse pointer. Press 2 and wait 1 second. Press three and if you have 50 coins it I'll give you 100. A yellow brick will spawn there. Knights will kill a slime but die. if 1 slime dies 5 more die. the walls eventually break. There is a boss at the end.
DISCONTINUED The game is now broken and Discontinued. I will release the beta of my new Tower Defense soon, which will be a lot better than this one.