Vector TD is a game on Candystand. In this game, the player must place towers to defend against the invading army. The towers are:

Green laser towers, which come in various power levels Purple Power towers, which have 2 power levels Little Red Spammers, which fire many short-range missiles Red Refractor, which fire beams that bounce off enemies Seeking Missile, which fires a single, long-range homing missile

If 20 or more of the enemy get to the finish line, you lose. However, there are also bonus points you can earn to spend on things like extra lives, bonus in the cash you earn, range boosters, or damage boosters.