Dungeon Defenders - Gameplay

Dungeon Defenders is a mix of an action game and a tower defense game. The basic premise of the game is you place down towers to protect an Eternia Crystal (or more than 1 in later levels) from being destroyed by monsters. There are variations on this premise, like Survival mode, where you have to protect the crystal(s) from wave after wave of endless enemies, and Challenges, which provide you with various tasks that don't necessarily follow the basic premise.