Metal Gear Rising: Revengeance for PC is currently online-only
The just-released PC version of Metal Gear Rising: Revengeance currently only works online — but that may not be intentional.
Steam's product listing makes no mention of an online requirement, so either it's a bug, or Konami snuck in always-online DRM for the PC port. Many Steam users are giving the hack-n-slash negative reviews as a result.
J.P. Kellams, the creative producer for developer Platinum Games, has "no idea" why players are being forced to stay online. He's looking into the situation.
You won’t hear anything back from me for a while, maybe even not today… But don’t freak out. I’ll try to find out what’s up.— JP Kellams (@PG_jp) January 9, 2014