These days, you're simply not allowed to release a game without multiplayer. Well, you are , but such an offense is only rarely tolerated.
Personally, you can keep all multiplayer away from all RPGs, but I'm certainly in the minority on that. For a while now, there have been plenty of rumors circulating concerning the possibility of multiplayer in the next Mass Effect , and more evidence has arisen.
According to Eurogamer , the third entry in the award-winning series will probably offer a four-player co-op mode. However, the info says it's "standalone" and also features "competitive elements." Another source informed the site that BioWare Montreal was working on a multiplayer Mass Effect experience of some kind, which may be online or offline. Officially, BioWare boss Ray Muzyka will only say they're "interested in the idea of multiplayer," but we have nothing concrete.
Lastly, we know the game was recently delayed until next year (March 6 is the new launch date), so might that delay be due to the implementation of multiplayer modes…?
Related Game(s): Mass Effect 3