Elona. It looks like an old homemade 1990's PC game, has a shitton of skills, and is a single player roguelike/rpg game that lets you hoard all sorts of shit.
You can have ranches for breeding monsters, farms for planting seeds, houses for living in and shit, and museums and shops and more. There are a few normal races which you can play, but by editing the game files you can make EVERY race playable by simply changing a 0 to a 1 in a config. Every race as in, every kind of monster and every kind of animal; slimes, bats, dragons, cats, undead, machines, and other crazy shit.
Skills include shit like fishing, cooking, mining, tailoring, alchemy, carpentry, jeweling/gemcrafting, casting, negotiation, weapon proficiencies, healing (as in HP regen), and some other shit like meditation, stealth, memorization, and a metric fuck ton more.
Like there's pickpocketing and gardening and other things, but really if I were to list every skill it'd probably take me forever to remember them all.
There are a ton of spells in the game which level up as you use them, and magic is actually incredibly powerful at the cost of you owning spells temporarily and having to "recharge" them so you can use them again. Think of it like runes in Runescape, but instead you have to read limited-use spellbooks to recharge your stocks.
The game is amazing, although a little confusing at first. If you're going in, I'd highly recommend picking Exorcism or whatever, and maybe even Poison Touch as your first skills. Exorcism is the most important though for a newbie as it prevents your equipment from getting cursed, which makes them have debuffs and makes it so you can't take them off.
Practice around with the game for a bit and play around with different characters and races before you settle on something you wanna stick with; you can always mate with a wife and have a child that you can play as though, so you don't need to stick with a character forever. Just remember that the marriage thing comes a little bit later down the line, so it's still good to choose something you like for your main.
Download Elonaplus, which is also known as Elona+, and make sure that it has Elona Custom out for it, as it's basically Elona++. The game is some good shit and I'd highly recommend it to someone who likes Runescape and Morrowind. It has an atmosphere similar to a bizarre, distorted, and surreal Maplestory/90's JRPG with a feel that it was made by a fan of anime back in the late 90's/early 2000's (which it was iirc)
Seriously go get it; I'll keep this thread open if you need any help. Shit's free, so no harm in trying. Just expect to spend a bit of time on the character generation screen, so, don't waste too much time on a character you're just gonna ditch; spend time working on a character you're going to play a lot, instead.
Again I'll be here if you need help, at least for a bit. I might be gone at some point though so, I'm sorry if that's the case. But yeah I hope you have fun with Elona; it's a very solid game, and I could also recommend something like Mabinogi or Rune Factory 4 as well. Elona+ is still the best option though, as far as I'm concerned.
