You can now play both campaigns of the original Command & Conquer in 2-player co-op, thanks to one of its best mods
Dawn of the Tiberium Age is Command & Conquer modding royalty. With a history stretching back to 2007, the standalone mod aims to enhance Westwood's 1995 classic and its Cold War spinoff Command & Conquer: Red Alert. Built in a customised version of Tiberian Sun's engine, Dawn of the Tiberium Age lets players battle together in multiplayer maps using any of the games' four factions, and features a wide array of original single-player missions, including a whole new campaign.
It's a brilliant mod as it stands...