So, the best game on the market right now... which one is it? Well, we do know exactly, but the Brits may have a pretty good idea. At least we know that they are buying it like crazy. The game in question is, of course, Valve's Portal 2 which has been on the gaming scene since mid April and has been doing good. In the United Kingdom the game continues to be the top selling video game, beating its competitors Zumba Fitness (sigh) and the new Mortal Kombat game. Here's the top 20 chart of best-selling games in the UK for the week ending April 30:

1. PORTAL 2 (EA)
2. MORTAL KOMBAT (Warner)
3. ZUMBA FITNESS (505)
4. OPERATION FLASHPOINT: RED RIVER (Codemasters)
5. CALL OF DUTY: BLACK OPS (Activision)
6. LEGO STAR WARS III: THE CLONE WARS (LucasArts)
7. FIFA 11 (EA)
8. WII FIT PLUS (Nintendo)
9. HOMEFRONT (THQ)
10. JUST DANCE 2 (Ubisoft)
11. CRYSIS 2 (EA)
12. POKEMON BLACK VERSION (Nintendo)
13. MICHAEL JACKSON: THE EXPERIENCE (Ubisoft)
14. POKEMON WHITE VERSION (Nintendo)
15. TIGER WOODS PGA TOUR 12: THE MASTERS (EA)
16. WII SPORTS RESORT (Nintendo)
17. KINECT SPORTS (Microsoft)
18. DRAGON AGE II (EA)
19. ASSASSIN'S CREED: BROTHERHOOD (Ubisoft)
20. LEGO HARRY POTTER: YEARS 1-4 (Warner)

Read our review of Portal 2 (PC) here.