The number is a new record for IGN, which only launched fully localised UK versions of its major gaming channels at the beginning of January.
IGN UK’s monthly users have increased from 2.5 million just six months ago, leading the firm to claim that one in eight UK internet users now accesses IGN.
Average time spent on the site has also shot up.
According to the statistics, Gamespot attracted 2.7 million unique visitors in the month, followed by Gamesradar with 997,000 and Eurogamer with 225,000.
Media Metrix/ComScore’s full list of unique users of games and entertainment sites in January reads:
1 IGN Entertainment 4.1m
2 IGN Entertainment - Games 3.2m
3 Gamespot.co.uk 2.7m
4 IGN.com 2.5m
5 Gamesradar.com 997,000
6 MSN Movies - UK 980,000
7 Rottentomatoes.com 886,000
8 IGN.COM Home Page 627,000
9 Hollywood.com 534,000
10 Yahoo! UK & Ireland Movies 516,000
11 Ifilm.com 455,000
12 Eurogamer.net 225,000
13 Computerandvideogames.com 165,000
14 Totalvideogames.com 93,000