Summary: Choose from 4 different characters in this multiplayer local or online game. Defeat wave after wave of enemies, build traps to fend off enemies, protect your crystal from enemies. Has all types of levels and challenges, has a pvp arena so you can build traps and slaughter your friends. Loads of bad guys to slice mage and range, The auto aim can be a little annoying for the melee types but awesome for the range/mage types. Great game.