UPDATE - 5/1: FIFA 16 was the best-selling game in the UK across all retailers, according to a report by MCV - not just Amazon.
Call of Duty: Black Ops 3, Fallout 4 and Star Wars: Battlefront all finished in second, third and fourth respectively, with each of them having sold over 1 million physical units within the UK.
Over 28 million physical games were sold in the UK in total.
ORIGINAL STORY: FIFA 16 was the best-selling game on Amazon.co.uk last year, and the 10th best-selling item across its entire product line-up, the retailer has revealed.
While sales figures for the game have not been revealed, EA's latest football game managed to outsell Call of Duty: Black Ops 3, which landed at No.2 in Amazon's best-selling video games of 2015, and Fallout 4 at No.3.
The retailer's report also suggests that Grand Theft Auto V was the fourth best-selling game of the year, with FIFA 15 in at No.5. Sales data is said to have been recorded between January 1, 2015 - December 13, 2015.
The best-selling game in the run-up to Christmas, however, (which Amazon says is based on unit sales between November 1 - December 13) was Fallout 4, ahead of Black Ops 3 at No.2 and Star Wars Battlefront at No.3.
It isn't yet known which game came out on top in the UK across all retailers.
Black Ops 3, meanwhile, continues to dominate the top of the weekly UK charts, holding on to the top spot for four weeks in a row to become the first No.1 of 2016.
Source: Amazon.co.uk Winter 2015 Report