Gameranx is claiming that a group of Russian hackers has managed to break into Uplay and gain free access to all games on the service, including the yet-to-be-released Far Cry 3: Blood Dragon.

According to that site, the hack involves tricking Ubisoft’s digital distribution platform into thinking the user already owns a particular game, which makes it available to download at no cost and with no DRM.

More than half an hour of Blood Dragon footage was posted to YouTube yesterday but quickly yanked by Ubisoft.

"We are aware of the issue and are working to resolve it quickly” Ubisoft told Game Informer.

“No personal information was compromised. Uplay's PC download service will be unavailable until the problem is fixed, however all other Uplay services remain available."

Far Cry 3: Blood Dragon releases on May 1 for Xbox 360. Other platforms are still to be confirmed.

Uplay hack gives access to all games including Far Cry 3: Blood Dragon