This game was classified by the community with the following category scores - Violence=1/3, Sex=0/3, Mature Content=0/3. Defend Earth Or Die! is a reinvention of the classic tower defense genre. Build and upgrade towers in space against an invading alien horde. Unlock and use special combat powers to win battles. Push onward to the alien home world and exact your revenge! Brace yourself for a goosebump-inducing, epic experience.