>>302997660
I just beat it and came here specifically to suggest it. I wasn't expecting it to be anywhere near as good as it was. The only other game I've played that convinced me it was alive like this did was Rain World. 
Sandbox mode is it's own game all together and it's what I only expected this to be. I played it so long that my legs were hurting after about 4 hours and I had to force myself to stop. I know it seems like I'm overstating it's quality, but that was unexpectedly one of my favorite games I've played in years.