Contract J.A.C.K. is planned to be 10 missions long, and will be a standalone product -- you won't need NOLF 2 installed to play. (Although, that stellar title can currently be had for a mere $20, so there's really no excuse not to own it.) Contract J.A.C.K. will also support all of NOLF 2's multiplayer modes, including the recently released Doomsday, and at least one new mode Monolith has yet to reveal. Set to retail around the normal price for an expansion (we're expecting $30), the expansion should offer as much gameplay as many "full" games.