The Burning Crusade is the Top-Selling PC Game of 2007.

No surprise there.

According to the NPD Group, the industry-tracking research organization, The Burning Crusade- Blizzard's expansion to the World of Warcraft (2004)- is the biggest selling PC game of the year.

The Burning Crusade made its debut in January of last year and sold 2.4 million copies worldwide in its first 24 hours on sale, though I remember getting mine much later in June. For the US alone, the game sold 2.25 million units for the entire 2007.

The first World of Warcraft game landed in second place, selling an additional 914,000 copies in the US this year. Blizzard's hugely successful massively multiplayer online role-playing game first came out in late 2004, and has been a bestseller ever since.

While Blizzard has claimed the top 2 slots, EA Games seems to have dominated more than half of the Top Ten. In the list The NPD group released a few days ago, we also see Electronic Arts' The Sims 2 (also released in 2004) and its various expansion packs- The Seasons expansion pack(in third place), the Bon Voyage expansion pack (in eighth) and The Sims 2 Pets (at tenth). Two other EA games- Command & Conquer 3: Tiberium Wars (at #5) and Sim City 4 Deluxe (at #6)- land at the top ten.

Activision's Call of Duty 4 was the fourth biggest-selling game of the year, while Microsoft's real-time strategy game Age of Empires III made it to #9.

Best-selling PC Games of 2007, by units sold, as reported by the NPD Group.

1. World of Warcraft: The Burning Crusade Expansion Pack. Vivendi Games. 2.25 million
2. World of Warcraft. Vivendi Games. 914,000
3. The Sims 2: Seasons Expansion Pack. Electronic Arts. 433,000
4. Call of Duty 4: Modern Warfare. Activision. 383,000
5. Command & Conquer 3: Tiberium Wars. Electronic Arts. 343,000
6. Sim City 4 Deluxe. Electronic Arts. 284,000
7. The Sims 2. Electronic Arts. 281,000
8. The Sims 2: Bon Voyage Expansion Pack. Electronic Arts. 271,000
9. Age of Empires III. Microsoft. 259,000
10. The Sims 2: Pets Expansion Pack. Electronic Arts. 236,000