This was discovered when the game was put up on Steam for purchase whereby a number of Steam users written in to inform gamers about the always-on requirement. This is a bit odd given that the game is a single-player game, so the need for an internet connection is a bit odd. It is understandable if games like Diablo 3 which has single and multiplayer elements to have an always-on requirement, but we’re not sure what the deal is here. It is unclear if this is a bug or if it could be a DRM put into place by Konami, and the description on its Steam page does not state that an always-on internet connection is required either.
In any case whether this is a bug or a DRM put int place by Konami remains to be seen, but for gamers out there looking to get in on the action, this is definitely something worth taking note of before you go ahead and make your purchase.