Sonic CD was December's top PSN game

Not that we're necessarily surprised by Sonic CD taking the number-one spot on December's PSN charts, but it's always a little sobering when the classics of yesteryear outsell brand-new titles like Trine 2. Nostalgia is a powerful thing, friends.

Well, the fact that Sonic CD is arguably the best 2D Sonic game of all time probably has something to do with it too, but we all know most of us bought it just to hear Sonic Boom again. Hop past the break for the full list of December's best-selling PSN titles.

1. Sonic CD

2. Infamous 2: Festival of Blood

3. NBA Jam: On Fire Edition

4. Payday: The Heist

5. Trine 2

6. Castle Crashers

7. Saints Row 2

8. Resident Evil 4

9. Mortal Kombat Arcade Kollection

10. Voltron: Defender of the Universe

11. Penny Arcade Adventures: OTRSPOD, Episodes 1 and 2

12. Scene It? Movie Night

13. Oddworld: Stranger's Wrath HD

14. Dungeon Defenders

15. Battlefield 1943

16. Midnight Club Los Angeles Complete Edition

17. Resident Evil 5 Gold Edition

18. Call of Duty 4: Modern Warfare

19. Real Steel

20. Limbo