The NPD group has published the top 20 best selling games of 2008, and Sins of a Solar Empire is on that list at number 14! It should be noted also that this list does not count downloadable copies, which Sins also did an incredible amount of.
“Mention must also be made of Sins of a Solar Empire, the best selling strategy game in 2008 in retail stores and number 14 on 2008's list. Considering that the title reportedly sold well in downloadable copies in addition to its retail sales, both Ironclad Games and Stardock must be happy”
1. World of Warcraft: Wrath of the Lich King - Blizzard
2. Spore - Electronic Arts
3. World of Warcraft: Battle Chest - Blizzard
4. Age of Conan: Hyborian Adventures - Funcom/Eidos
5. Warhammer Online: Age Of Reckoning - Mythic/EA
6. Call Of Duty 4: Modern Warfare - Activision
7. The Sims 2 Double Deluxe - Electronic Arts
8. World Of Warcraft: Wrath of the Lich King Collector's Edition - Blizzard
9. Fallout 3 - Bethesda Softworks
10. World Of Warcraft: Burning Crusade - Blizzard
11. Call Of Duty: World At War - Activision
12. The Sims 2 FreeTime - Electronic Arts
13. World Of Warcraft - Blizzard
14. Sins Of A Solar Empire - Ironclad Games/Stardock
15. Warcraft III Battle Chest - Blizzard
16. The Sims 2 Apartment Life - Electronic Arts
17. Crysis - Crytek/EA
18. Left 4 Dead - Valve
19. Diablo Battle Chest - Blizzard
20. The Orange Box - Valve
Link: Big Download Blog