1. Shenmue (Dreamcast), I own the official soundtrack
http://www.youtube.com/watch?v=s5HRa89Thpk
2. Halo Series (Xbox, Xbox 360) I own several official soundtracks as well as the new vinyl record
http://www.youtube.com/watch?v=aAv2TqTaeXc
3. Panzer Dragoon Saga (Saturn), I own two official soundtracks
http://www.youtube.com/watch?v=JS8vCLXX5Pg
4. Mass Effect Series (Xbox 360, PC, PS3)
http://www.youtube.com/watch?v=e2z28mutY1E
5. Metal Gear Solid: Twin Snakes (Gamecube) I own the official soundtrack
http://www.youtube.com/watch?v=kZGqPDxDdU8
6. Headhunter (Dreamcast, PS2)
http://www.youtube.com/watch?v=SGrN_RD86C4
7. Skies of Arcadia (DC)
http://www.youtube.com/watch?v=WSekeg3ml9c
8. Zelda Series (N64)
http://www.youtube.com/watch?v=6Qp-ypYp6rQ
9. Monkey Island series (PC)
http://www.youtube.com/watch?v=JbWZjfLO2Z0
10. Portal 1 & 2 (Xbox 360, PC, PS3)
http://www.youtube.com/watch?v=dVVZaZ8yO6o