Heeey, I'm likin' it!
Did you draw all of those yourself? If so, then my biggest suggestion would be to continue with that and draw the maps as well. The default RTP style kind of clashes with your graphics style. It kind of reminds me of a whimsically nice professional flash game. xD But honestly, I think if you draw the map graphics as well, we'd have something that's really fitting in the whole atmosphere of it. I also say this since it looks like there's some mapping errors in that vertical forest map (or things just look a little too weird for comfort).
Would've loved if you recorded the audio too, but no worries. xD If you aren't aware of it, you can record audio in screen recording programs by setting your recording input as "Stereo Mix". If you're on a Vista or later, it may be disabled by default, to which you can enable it by going to Recording Options and not setting it to hidden (or something like that, Google does wonders here).
Really slick and nice though.