A five level map pack costing $15 retained its position as the number one best selling PC "game" on Steam's weekly top 10 best selling games list (according to revenue). The Modern Warfare 2 Resurgence Map Pack from developer Infinity Ward found itself on top of the chart for the second week in a row.

Despite mixed reviews, Realtime Worlds' shooter MMO All Points Bulletin (APB) is at the number two slot on the Steam top 10 list this week. The full list is below.

1. Modern Warfare 2 Resurgence Map Pack - Infinity Ward/Activision
2. APB (All Points Bulletin) - Realtime Worlds/EA
3. Battlefield Bad Company 2 - Digital Illusions/EA
4. Disciples III : Renaissance Steam Special Edition - Akella/Kalypso Media
5. Blacklight Tango Down - Zombie/Ignition Entertainment
6. Call of Duty Modern Warfare 2 - Infinity Ward/Activision
7. Transformers War For Cybertron - High Moon Studios/Activision
8. Left 4 Dead 2 - Valve
9. Team Fortress 2 - Valve
10. Sniper: Ghost Warrior - City Interactive