The mission in Attracto TD is simple. You must defend your crystal base with an assortment of magnet towers and turrets. Attracto TD isn"t like most other tower defense games. All of your towers have different powers. some are magnets while others push away so you will need to use some good strategy when you build your defenses. You have to defend your crystal for a certain amount of time by keeping enemies away by any means necessary. Just so you know, this game is incredibly challenging and will take some time to master.