As of Alpha 0.6.5....
Somewhat unique crafting system (pro/con? Too early to tell if it will be vast and realistic, or hindered and backward thinking in hopes to keep item numbers or crafting recipes to a nominal amount (and/or to cater to simplicity). Depending on how high the tech tree can go will be how challenging it will be for the dev team to keep it realistic, genesis of bronze age for now. But with magic it can be forgiving.. It's kind of a writer's convenience in games anyway.
Character developement remeniscent of Fable series. If you spend a lot of time in the sun your hair blondes. If you spend most of your time mining your hair is darker. You sit around half the day messing with your base and overeating you become a fat slob. You have a balanced diet and spend a little time exploring you stay fit.
Excellent world gen., biomes transition fairly well
Overall Graphics are good.. If you can run them.
Not sure if this is out in the 0.6.5 build but you are(will be) able to place terrain in voxel or block shapes which makes a big difference when you're trying to make something look good.
Very demanding even with a high end pc. I've seen reviews of this with dream setups and their PCs just couldn't handle it at mid-high settings. Could be due to the new engine they are using and bugs need to be worked out. 2012 Asus Republic of Gamers laptop and it runs smooth for 10 out of every 30 seconds in game. Legacy as well as New Terrain Gen seem to be the culprit.
It's not done yet :). With the recent financial setbacks delaying TUG I find myself yanking more hair out than I can afford. Greatly anticipated this game nearly a year before Alpha release. As much as I hate to say it, I'd rather it take much longer to complete than anticipated and not compromise it.
It's just too early to tell and opinions should be taken with a grain of salt for now (especially this one O.o) Even if the crafting system is a flop its saving grace could be character developement. Who knows what direction they'll go. If I had it to do again I would wait on a purchase of this game until they move toward fine tuning that Eternus engine a bit to make it play nice with voxel, or whatever the issues are. For now their updates, as far as I can tell, are mostly new content. Wary but hopeful. I wish the entire team at Nerd Kingdom the best of luck with this monumental task.