Ubisoft is in talks with Valve to get Assassin's Creed 3 and Far Cry 3 on Steam in the UK.
In a statement issued to PCGamesN the publisher advised gamers to buy the two titles from its own Uplay store and other digital shops.
We've been in discussions with Valve about Assassin's Creed 3 and Far Cry 3, but for the time being the games are not available via Steam in the UK, Ubisoft said.
In the meantime, UK customers wishing to purchase either of these games can do so by visiting the Uplay store, our retail partners or other digital distributors. Assassin's Creed 3 and Far Cry 3 are available on Steam in other regions outside the UK.
The reason for the omission is unknown. Valve is yet to comment.
This doesn't look like a repeat of the situation between EA and Valve, which has resulted in the removal of EA games from Steam as EA's Origin has established itself as a major player in the digital games landscape.
Ubisoft's online services head Stephanie Perotti told PCGamesN in August: You can still find our games on Steam and we do not have any intention to change that. We believe in choice and we believe that it's normal to let the players and the consumers choose where they want to purchase their games.