Monster AI is OP, they can see you through floors. In addition, my respawn is messed up, the monsters were stalking me to there, so when I popped out of the ground, they killed me, and I kept dying. Finally, the brightness died the second day I was playing(in game day). Idk what that was about, but I hope this feedback helps.
Oh right, the spawn-in-a-mountain thing. That GENERALLY doesn't happen, but if the terrain gets really high, it sometimes misses the top. This is because I didn't want any seeds accidentally spawn in the skyhold :3
There's a game somewhat like this that I recommend highly. The only difference is that you play the game after a while. The game is called Mythic Saga try it out if you want a game like this except a bit better ;)
The levels progress rather oddly, I noticed a really difficult one that took me ~10 tries to get through came before one that was amazingly easy that took me one try to get through.
 "Accelerator"){kind=icon}
 "Mine Blocks"){kind=icon}
 "Post it Draw it"){kind=icon}
 "Knightmare Tower"){kind=icon}
 "Takeover"){kind=icon}
 "Zombies, Inc."){kind=icon}
 "Odin Quest"){kind=icon}
 "Soul of Guardian (SOG)"){kind=icon}
 "Infectonator 2"){kind=icon}
 "Balloon in a Wasteland"){kind=icon}
 "Biovolve"){kind=icon}
 "Transformice"){kind=icon}
 "Realm of the Mad God"){kind=icon}
 "Bloons TD 5"){kind=icon}
 "Super Adventure Pals"){kind=icon}
 "Ninja Warz"){kind=icon}
Oh right, the spawn-in-a-mountain thing. That GENERALLY doesn't happen, but if the terrain gets really high, it sometimes misses the top. This is because I didn't want any seeds accidentally spawn in the skyhold :3