Basic: What do you listen when you play games. I have odd things. When I'm playing CS its something that has good synths and lots of drums (when I played quake 3 a lot all I had were drum and bass CD's around so I'd pop one in a CD player and have it in the background and eventually when I didn't have it playing one day at a small local tourney I did horribly. The drum beats would help me focus like nutso xD). When I play league, I like to just HAVE something. I like 8bit and at the time I was into league I was into 8bit.
I typically don't have a "playlist" I will, however, listen to albums I haven't heard yet like most of the stuff from Metal Monthly (power metal section of course).
Really depends on my mood though. Most of the time it's metal, but there are times when Jazz is called for, or even classical.
I listen to nothing but what comes with the game. Now if I find it distracting or awful I shut it off and listen to nothing but the in game sound effects.
When playing FPS games I "sound whore" like mad so no music for me. I always hear people before I see them and I can always tell exactly which direction they're coming from. It's like wall-hacking but with your ears and it's not cheating. lol.
When I'm playing a competitive multiplayer game, I dont listen to any music (focus reasons as well as hearing other players). With other games I just listen to whatever im into at the time. However with some games I actually listen to specific stuff. For example in borderlands 2 i listen to static-x or black sabbath (an odd mix i know) and when playing skyrim i listen to amon amarth