This is brillant!
The alien landscape begs exploration, i felt like i created my own purpose going around, looking for things to explore.
I found my annoyed at my own impatience at times, this "game" is like a little stop from reality, with really good immersion.
2 things i was a bit annoyed by, one the wobling while walking seemed off at the start when you go down the steep hills, and two, i know it is by choice, but the lack of shading was very disorienting at times, a few cracks, or dented walls could have fixed that i think.
Both these two things are really minor, other than that, this is a darn well made!