I tried the demo and loved it!
It's a bit like Populous, which I had on PC yonks back.
The game has (I think) 12 levels, each getting harder. The object of the game is to manipulate the landscape for a small tribe to flourish.
It starts off piss easy; just send your tribe to a couple of totems, then the realm exit.
But then it starts getting harder: volcanos randomly erupt spewing lava, tidal waves flood low lying levels, as does the rain. Water reacts with lava to create rock. Sand grows trees on it, but then if the lava hits it starts a fire which can wipe out your village. There's rivers that need to be crossed, lava flows need managing, rising sea water means you have to terraform the land higher.
You also gain powers to manipulate the land as the game progresses. The landscape is completely sandbox, with any number of ways of finishing a level. They can take over an hour to do one level, fighting lava flows setting fire to tree and threatening your tribe.
It's a brilliant little game with lots to do to keep your entertained. Get the free demo and have a look.