Really impressive, lots of content there. I enjoyed moving around trying to discover stuff but I got stuck on the second planet - went into the caves and it looked like I had nowhere to go, I went back and forth a bit but couldn't find anything new so I gave up. A game like this should probably give player a few indicators of what to do/where to go.
Graphics are really nice, music is amazing - not sure why there is no music when in town though.