Dead Space 3 is an upcoming third person shooter that takes place in space. Mass Effect is another RPG/third person shooter in space. Both of these titles have a lot in common, they even share the same publisher, EA.
EA has decided to pay tribute to the Mass Effect franchise by bringing the iconic N7 armor to Dead Space 3. The N7 armor has proven to be pretty popular, that design finds its way on a lot of things. Should be pretty interesting if we were to see the two world come together.