Too many fingernails were bitten clean off because Dead Space was 'too scary' for some to play on their lonesome. EA's solution was to introduce co-op play in Dead Space 3.
Laura Miele of EA said they were getting feedback that people "love the thriller game, but it was pretty scary," and that the "obvious next step" was co-op support.
The scare tactics of the original two Dead Space titles were so strong because of its single player design, reckons EA Games marketing boss Laura Miele. Unfortunately it turned some people away from the IP as their gamer constitutions didn't feel all that comfortable playing solo.