Modern Warfare 2 was due to have a full co-operative mode in its main campaign, but the Infinity Ward community manager Robert Bowling told VG247 that it "ruined the experience" of the game.
"We did it early on; that's what Spec Ops started out as, as co-op through story," Bowling told VG247. "But it really broke the cinematic experience, took the immersion out of it, out of the story and the pacing and everything we'd spent so long crafting. It just ruined the experience we were aiming for, so we took it out, kept the single-player for that one player intact and polished it.
"But then there were moments that were really fun with two players, so we took those moments and put them in Spec Ops," he added.
The resulting Spec Ops, in Modern Warfare 2, is a mission-based co-op section playable online or locally in split screen, separate from the main campaign. "So you can play moments directly taken from the single-player, in Spec Ops, but it's polished towards those two players so the experience is pure. You really get the best of both worlds: you get the moments that were fun, but the moments that were sh—-y we took out."