Ubisoft's London-based Assassin's Creed: Syndicate has debuted at No.1, but its performance compared to its predecessors will be a big worry.
Chart-Track says that its numbers fall short of surpassing any of the other major entries in the series”, although it did better fellow non-Ubisoft Montreal developed title Assassin's Creed: Rogue.
The decline comes despite some positive reviews for the game but after the significant technical problems experienced by last year's AC: Unity, the taste of which may still be lingering in gamers' mouths.
EA's FIFA 16 is forced into second place ahead of Activision's new entry Guitar Hero Live at No.3, sales of which are 24.3 per cent up on the last release in the series Warriors of Rock.
That's the only new release to break in to this week's Top Ten, with Nintendo's The Legend of Zelda: Tri Force Heroes managing 11th in its first week and Ubisoft's Just Dance 2016 debuting in 19th. Bundling sees Watch Dogs re-enter the listings at No.12 thanks to a 430 per cent surge in sales.
The release of The Witcher III's expansion also helps that RPG to a 121 per cent sales boost, jumping the game from 20th to 15th.
Here's the UKIE Gfk Chart-Track All Formats Top 10 in full:
1. Assassin's Creed: Syndicate (Ubisoft)
2. FIFA 16 (EA)
3. Guitar Hero Live (Activision)
4. Uncharted: Nathan Drake Collection (Sony)
5. Grand Theft Auto V (Rockstar)
6. LEGO Dimensions (Warner Bros)
7. Destiny: The Taken King (Activision)
8. Forza Motorsport 6 (Microsoft)
9. LEGO Jurassic World (Warner Bros)
10. Metal Gear Solid V: The Phantom Pain (Konami)