After listening to some of them, I won't lie. Some of the tracks sound like they really don't have to be there. Like, some of the tracks sound very similar, and others aren't very pleasing to the ear, unless that's what you were aiming at. I'm going to guess you're making a 2D or a pixelated game coming from the music, because it sounds like that's what you're going for. I think the FX are pretty cool but a lot of the stuff sounds dark or atonal, and it's lacking in melodic sounds. I also find that some of the loops are far too short and could easily be tired out after a while, so I recommend that you continue to loop it but add different things happening through parts of the song, like in 'I Remember', by Deadmau5 & Kaskade.
Anyways, that's just what I think. Please don't take it super seriously and start exactly from scratch, because that's not what I'm trying to make you do with my critique. I hope it's helpful!