I dont know, I played a fair bit of unreal world thanks to an awesome guy here that did a giveaway, and I must say its quite enjoyable, but it doesn't feel polished and the gameplay gets dull once you get a nice house and lots of meat. Then the only fun comes from killing njerpez, and that gets olds sorta fast.
The hunting element feels nice though. I wish Heaven&Hearth's hunting was as good, and not just build a fence around something, shoot at it forever with a sling, and bows taking longer then civil war cannons to shoot.
Yea, the current game needs a bit more endgame content. You have to come up with your own challenges to make the game entertaining. Building a super warrior, suiting him up in mail with a northern bow and battleaxe, recruiting an army of hunters and adventurers, and invading the Njerpez can be fun for a while. Playing as a nomad can be interesting too, exploring the world and living off whatever you can kill. I'm hoping the peaceful settled life gets more interesting when more of the NPC interaction and community features are implemented.
Thats usually what eventually makes me stop playing. Back years ago I'd go raid caves until I eventually died, going down hundreds of levels (I seem to recall one cave that I made it to level three hundred and something before dieing to a group of njerpez that surrounded me). Now that the game is a bit more realistic than that the main challenge is getting food and a house, and once you have that the game can get boring if you don't set new goals for yourself. I remember one game where I lived on a river and had a bunch of loop snares all along the river, and every day I'd run the snares and cook up some meat stew with some turnips from the garden - but eventually it got tedious and repetitive.
I'd imagine the reality of living in that situation would get a bit tedious and repetitive too, if you live in a house in the middle of a river all by yourself and live on your garden and meat from snares that you religiously check every single day - so I can hardly blame the game when I set myself up for boredom.
URW still keeps pulling me back in for weeks or months at a time every few years, though. I guess it's just a craving for a good survival sim, which are very few and far between.