

You'll have to adapt to new strategies instead of bum-rushing Arcturus Mengsk's forces with your chittering hordes. To get hold of these mods, start up StarCraft 2, head to the multiplayer. Speaking of difficulty, if you've played the Starcraft campaign a trillion times and mastered the subtle art of overrunning a Terran base with an endless swarm of zerglings, they've gone the extra step and included an "Insane" mode for both co-op and single player campaigns. StarCraft II is available free to play, with additional single player, co-op. The industrious modders didn't just slap on a co-op mode they tweaked each mission in both terrain and difficulty to compensate for two players.

I have to wonder if they give each faction to one player in that scenario. Though, the final mission in the Vanilla version of the game gives you control over Terran and Protoss units. Depending on what chapter of the story you're in, both of you will take control of that faction's units. Taking a cue from the skirmish modes, both players are left in charge of their own units and bases.
