Being a fan of multiplayer modes, buying rage was risky (i get bored with sp easily), but so far I'm rather liking it. The only problem is the lack of other modes. It would expand the gameplay time and fun if it had another multiplayer mode, a horde or wave style mode. The diversity of enemies, and difference of their strength would help in the increasing difficulty of the enemy waves, so I can't see why not. It just fits perfectly, and would expand the game, making it feel worth more. Still, congratulations to the creators of Rage, who did a nice job.