>>1559281Dude. I know that hardware prices are not great right now but you can still get something better than that for a reasonable price. Nowadays most smartphones have better specs than that. Try to hit up facebook marketplace or any other online or perhaps even offline marketplaces that sell used pcs near you. I mean a lot of the games from my list might still run fine but you can definetely do better than that.
Still I remembered a few more games.
Sacred 1/2 gold (not the remasters)
FATE (2005) + mods - Maybe the other FATE games too but I haven't played them. I think there was a mod to port content from the other FATE games to the first one.
Dungeon Defenders 1 - They started updating it so I'm not sure if it still has the same requirments. Kinda requires to equip different characters if you're playing solo which can take a while. Also I think you might need to run multiple windows for levelling other characters and I think building towers too.
Dynasty Warriors 6 - Maybe the other ones too. Most of the grind is levelling and I think equipping different characters.
Tales of Maj'Eyal
CDDA - Dunno if it still runs on calculators. Can be grindy if you choose to survive for long enough to start building your own base/village.Tileset is kinda required.
Warcraft 3 - Not the reforged. There are a lot of custom maps that are sometimes better than modern AAA games and amongst them there are some grindy rpgs that can be played solo.
Zombasite - A weird mix of Titan Quest and FATE. Not the worst thing ever but I wouldn't recommend it as your first pick.
Siralim games - Heard that they are pretty grindy.
Dwarf Fortress - Steam release should work.
Fallout games up to New Vegas + mods - Not really grindy but they have replay value and mods add to that. Just don't give your money to Todd.
TES Morrowind and Oblivion (maybe older ones) + mods - Same as the above.
Dungeon siege 1/2 - The first one was kinda grindy but mostly linear. I think the second one is pretty similar.