Gnomoria is superficially similar to Dwarf Fortress, but in 3d. I found it to be an almost entirely worse experience.

The visuals are the only thing that are an upgrade from Dwarf Fortress (and I wouldn't even say that if you are using a texture pack with DF), and they get the job done. It looks basically like a 3d rendering of what you would get out of DF. The spritework is fine, but not incredible.

The interface in Gnomoria is pretty atrocious. There are a ton of nested menus and getting your gnomes to do anything is pretty tedious. It has an auto-queue system, so if you make a table it will automatically queue the planks the table requires to be made, but this only manages to make things barely functional.

There are about 30 workshops in Gnomoria for making various things, many of which have unclear function until you build them and seem to be arbitrarily different (there is a stonemason, a stonecutter, and a stonecarver... why!?). I don't know why this is the case or what purpose this could possibly serve. It makes the development of this game feel ad-hoc and arbitrary, rather than towards some sort of goal.

Despite the complexity of workshops, the game itself is extremely simple. There isn't much to do (beyond building more workshops!?) and things get stable (and boring) pretty quickly.

There just isn't much to recommend this game at all, unfortunately. Try Dwarf Fortress if you want depth and Rimworld if you want polish.