A webplayer of your game would gave us more information about the right theme for you game.
Also,if you can’t post a webplayer,tell us more information about your game,what the story is…
You need to choose the music depending on the situation:
-if you got a slowy scene then,the right music would be a quiet,peaceful one…
-if you got a fast,angry" scene–some ,angry" music will fit in
It’s up to you…but as a I said,a webplayer first or more details.
I like Theme 5 the best, with Theme 4 being a close second. I think that the techno theme fits the visual style of your game best, and Theme 5’s slower pace matches the speed of your game.