Ubisoft has apologised to PC customers that were 'frozen out' of their games over the weekend due to DRM problems - and blamed a hack of its servers for the issue.
As reported on CVG this morning, gamers found themselves unable to play Assassin's Creed II and Silent Hunter due to the DRM requirement that users' online connection remains unbroken.
Ubisoft said on its official Twitter account today:
'Apologies to anyone who couldn't play ACII or SH5 yesterday. Servers were attacked which limited service from 2:30pm to 9pm Paris time.
'95% of players were not affected, but a small group of players attempting to open a game session did receive denial of service errors.'