Pretty song :)
Like the other reviewer commented, this did remind me of Minecraft! I think it's the instruments you used in general, and not just the fact that it's ambient. Nevertheless though, the song manages to establish an original and unique feel, with a pretty and calming feeling. It's looming, but not in a threatening way, and more ponder-y. The progression in general is great for an ambient song, it's not too harsh and fast, but also varies up through its entirety. I think you did a great job, keep it up!!