Oh who am I kidding, it's because I'm only playing on Hard so far and I've only played the first 25% of the songs. I'm sure Expert will kill me, I can't even get through One in GH3 on Expert. So playing Hard first lets me get through the career at least once, plus lets me re-learn how to play (I've been doing drums only in Rock Band for months, my guitar skills are rusty).
So here's the updated list:
- Guitar Hero: Metallica (X360)
- Rock Band (X360)
- Mass Effect (X360)
- Assassin's Creed (PC)
- Quake Live (PC)
- Age of Empires: Age of Kings (DS)