This game is basically a port of the mobile game (minus the ads, which I liked for getting free stuff only), and sadly you cannot friend mobile players :(
The game is pretty chill, albeit a bit of a grind, like after the tutorial, a lot of the game is just waiting for monsters to be bred and placed and collecting money from every island (which as you get more and more islands and monsters on them, it gets a bit more annoying), and using the in-game purchases (which are optional but can speed up the process of stuff and get cool decorations for islands, the decoration part is a bit expensive for my tastes). I overall enjoy this game passively, and recommend the game as it is a free game and you can play other games while waiting for breeding times and listening to the sweet music, especially my favorite island which is Light island.