Square Enix has issued a fix for an issue that left some copies of the PC version of Deus Ex: Human Revolution unplayable.
Earlier this week gamers reported that copies of the Eidos Montreal-developed game bought from The Hut and Zavvi included codes that Steam did not recognise.
Square Enix told Eurogamer this morning that the problem was now fixed, and apologised to disgruntled fans.
"Thank you for bringing this to our attention, there was an error with codes and this was not the fault of Zavvi or any other retail partner," a Square Enix spokesperson said.
"This has now been fixed and all of codes will now work perfectly. Enjoy the game and we apologise for any inconvenience."