Capcom's Bionic Commando 2 on PlayStation Network forces gamers to log into PSN each time they want to play, according to various online reports.
A message on the game's PlayStation Store listing states: "NOTE: You must log-in to the PlayStation Network each time to play the game."
This means you'll need to be connected to PSN when you want to launch the game, but you should be fine to carry on playing if your connection to the service drops after that.
Capcom utilised the same DRM method on its PSN release of Final Fight: Double Impact, a move which was badly received by gamers. The slight saving grace was the fact Final Fight featured an online enabled co-op mode. Bionic Commando 2, however, is strictly a single-system multiplayer game. PS3 gamers are not happy.