It's 'Portal Kombat' atop the UK charts

Portal 2 nabbed the top spot on the UK software sales chart last week, followed by Warner Bros. Interactive's Mortal Kombat reboot in second place. According to Chart-Track, Portal 2 was actually Valve's first ever all-formats chart topper -- the closest the company ever got to the crown was with The Orange Box, which reached third place.

Call of Duty: Black Ops "price promotions" in the region caused Activision's behemoth to jump back into the the top three, followed by last week's chart topper, Zumba Fitness, which still increased sales by 10 percent last week. The top five was rounded out by the blockheads of Lego Star Wars 3: The Clone Wars.

Operation Flashpoint: Red River also had a solid debut, entering the charts in sixth place. Check out the full top ten after the break.

[Image: The Game Station's Portal Kombat]

Top 10 UK Software Sales (All Formats); week ending April 23:

1. Portal 2

2. Mortal Kombat

3. Call of Duty: Black Ops

4. Zumba Fitness

5. Lego Start Wars 3: The Clone Wars

6. Operation Flashpoint: Red River

7. FIFA 11

8. Crysis 2

9. Wii Fit Plus

10. Homefront