The NPD revealed the PC game sales chart for June (via Gamasutra) and it's a bit different from previous months. Instead of Sims 2 and World of Warcraft destroying all opposition, now Sims 3, World of Warcraft, and Sims 2 are doing so.

1. The Sims 3 (EA The Sims Studio, Electronic Arts)
2. The Sims 3 Collector's Edition (EA The Sims Studio, Electronic Arts)
3. The Sims 2 Double Deluxe (EA The Sims Studio, Electronic Arts)
4. World of Warcraft: Wrath of the Lich King (Blizzard Entertainment)
5. World of Warcraft Battle Chest (Blizzard Entertainment)
6. Spore: Galactic Adventures (Maxis, Electronic Arts)
7. World of Warcraft (Blizzard Entertainment)
8. Spore (Maxis, Electronic Arts)
9. Empire: Total War (The Creative Assembly, Sega)
10. StarCraft Battle Chest (Blizzard Entertainment)
11. World of Warcraft: The Burning Crusade (Blizzard Entertainment)
12. Reel Deal Slots Adventure (Phantom EFX)
13. Civilization IV: Complete Edition (Firaxis Games, 2K Games)
14. WarCraft III Battle Chest (Blizzard Entertainment)
15. SimCity Box (Maxis, Electronic Arts)
16. Diablo Battle Chest (Blizzard Entertainment)
17. The Sims 2: Apartment Life (EA The Sims Studio, Electronic Arts)
18. Prototype (Radical Entertainment, Activision)
19. The Elder Scrolls IV: Oblivion GOTY Edition (Bethesda Game Studios, Bethesda Softworks/2K Games)
20. Ghostbusters: The Video Game (Terminal Reality, Atari)

According to the NPD, The Sims 3 sold 820,000 retail copies in North America in June. This made the game not only the top-selling PC title of last month but also the top-selling game of any platform.