It's fun, but it's tedious and turns into mindless clicking really fast. There're bugs in the game that can pretty much soft-lock you from progressing like how i'm stuck without flying horses. The UI is frankly messy, since everything you can buy is rarely sorted and is just placed there in a list. You can't backtrack to the last town, and depending on how prepared you were in the old towns, this game can be a breeze or really really grindy and idle. There's also "map downloads" for some builds that you finish (which is in the same list as everything buyable). There's a bit of depth and SO MUCH content to play through given that you didn't get soft-locked. Also.. a lot of clicking. A LOT.

ps. It's an old game so it probably will stay that way, as they're also developing the "grindcraft 2" mobile game. Also, try reloading the page if you get soft-locked. Save before reloading. It.. might help. It certainly helped me.