Excellent game! I've been looking for some time to compose music like the one in this game, but I can't seem to get many references, mostly because I can't name this genre. The whole basis of the genre (according to me), would be the high pitched mysterious pads, but I don't know how to name or synthesize them (I'm pretty bad at synths). I would be ever so grateful if you gave out tips about how you composed this music and if you synthesised the pad from scratch, how you did that.
For reference, here's another music which features the sounds I'm looking for: