Last night, when I went to bed, the last thing I saw as I turned off my PC was a huge banner ad on Steam advertising Assassin's Creed: Unity. By the time I woke up this morning, the game was gone. You couldn't buy it on Steam if you wanted to.
Far Cry 4 isn't there either. Nor is The Crew. Yesterday, all three Ubisoft games were up for sale, and just like that, today they're not. Three of the biggest games left to come out in 2015, and on the PC's biggest digital shopfront there is now a black hole where once there were pre-order deals and wishlist entries.
What gives? Officially, not much. A Ubisoft rep in the UK offered this statement to PCGamesN:
We've been in discussions with Valve about Assassin's Creed Unity but for the time being the game is not available via Steam in the UK.
Unity, along with the other two games, isn't available in the US either. Or Europe. Or Australia. We've asked Ubisoft's US team for comment, along with Valve, and will update if we hear back (so we're yet to know if they'll ever be back, or what exactly happens if you've already preordered).
Remember that Ubisoft has its own digital shopfront on PC, and its own uPlay service for, well, whatever uPlay is doing.
UPDATE: Assassin's Creed Unity, Far Cry 4 and The Crew are all back on the Steam storefront in the United States.