An open-source sandbox tower defense game
Air traffic control tower and radar simulator (solo + multi-player)
One of the First Blooket hacks online
A modern-day tileset for Nethack.
ASCII based browser tower defense game
Tower Defence
Asteroid-destruction space game Java applet
The classic intelligent role playing game
Chiefboz Tower for Skyscraper Simulator
Defend against zombies by putting tnt in the gold blocks and blow up!