The PlayStation Network version of Warhawk uses a different DRM policy compared to other games available to download. Most games on the PSN can be downloaded onto four other PlayStation 3 consoles, in addition to the original system allowing you to share a game with friends. With Warhawk, this isn’t the case. A Sony representative said Warhawk can still be downloaded to other PS3 units, but it will only run on the original purchaser’s account.
Furthermore, if the original account is used on multiple machines, then you will not be able to play on another machine for 24 hours. Future PSN titles will also be evaluated in terms of development costs, maintenance costs, server costs and other factors. These will be used to determine which DRM policy will be implemented for a particular game. The development costs for Warhawk, for example, is “no different than any other boxed game you might find from SCEA at retail”. That along with its free online gameplay environment were the major causes for the implementation of the new DRM.