Original Story: Of the $18.85 billion the video game industry generated at North American retailers throughout 2007, only $910.7 million of that, roughly 14%, was attributed to PC games.

Data from the sales-tracking firm NPD reveals that retailers sold 267.8 million games in 2007, 36.4 million of which were PC titles. Console games brought in $6.6 billion, selling 153.9 million units total, while portable software hauled a record $2 billion in revenue with 77.5 million units sold.

Figures were also released highlighting the top ten best-selling PC games of this year, accompanying last week's list of 2007's top ten console games. The numbers, which do not take digital downloads into account, have Blizzard Entertainment's World of Warcraft and EA Maxis' Sims franchises occupying six of the top ten spots. A complete run-down of the top PC games of 2007 follows:

1. World of Warcraft: Burning Crusade (Blizzard Entertainment) - 2.25 million
2. World of Warcraft (Blizzard Entertainment) - 914,000
3. The Sims 2 Seasons Expansion Pack (EA Maxis) - 433,000
4. Call of Duty 4: Modern Warfare (Infinity Ward) 383,000
5. Command & Conquer 3: Tiberium Wars (EA Los Angeles) - 343,000
6. Sim City 4 Deluxe (Maxis) - 284,000
7. The Sims 2 (Maxis) - 281,000
8. The Sims 2 Bon Voyage Expansion Pack (Maxis) - 271,000
9. Age of Empires III (Ensemble Studios) - 259,000
10. The Sims 2 Pets Expansion Pack (Maxis) - 236,000