I have been playing this game with a friend on a server for alot of hours now. But there are some things you should consider before buying (or pirating) it:
The game itself is still in early acces right now. Although in this state it still has more mobs, biomes, furniture options than minecraft. The overall vibe with the music is really well done and themes change as you explore certain biomes or structures.
If you don’t use mods you are in for a fairly quick time. Theres no endgame to work to without them at this moment and you might get bored fast. Theres alot of good mods already. Since the Hytale team is giving away jobs to good modders theres alot of people trying their really best. Installing them is so easy, even a monkey could do it.
The multiplayer aspect. I can only speak for a 2 man server. But the RAM usage goes crazy at some points. We have 30+ mods installed at this point. Its mostly new crafting stations or weapons, a few just add new mobs, no biomes yet. Exploring the world with 2 people spikes up the RAM usage to 10-12GB. Instances/dimensions are not optimized for multiplayer, we can only do really small ones with bigger ones sending us over our 20GB limit instantly crashing everything.
Overall I would say it’s a breath of fresh air if you like open world/sandbox games with a light RPG aspect. But don’t expect to do anything with big groups unless you have massive amounts of server RAM at your disposal.