It's a bug
Hahaha, just posted this. Yes, I've been in meetings since 1:30PM, and finally came out to be told about the offline issue. Yes, we are looking at it. No, it wasn't actually supposed to do that. That is all!
UPDATE: Strong possibility that it may be a bug with the Steam API, also here is Creative Producer at Platinum's twitter post
I'm more convinced now that they just don't handle some return value from some Steam API function correctly.
This is definitely a function of the way MGR uses the Steam API. Using a modified steam_api.dll allows it to work in Steam Offline mode. I can't say whether it's a bug or deliberate implementation, but it's not any other sort of DRM, all Steam.
Fucking seriously, Konami?
Uuh, looks like Rising doesn't work at all if your internet goes out or if you put Steam in offline mode. That seems... odd.
yep. this is going to be annoying. I was halfway through chapter 2, internet disconnected and MGR just shut down.
Just tried offline mode. He seems to be correct.
I was going to buy this, but I don't pay for entirely single player games that require always online DRM.
My game doesn't start in offline mode O_O
First the region locking nonsense, now this.
Stop treating your customers like criminals, Konami.