Kingdom of Loathing, at first it looks like one of the many "you get limited amount of turns per day" dealies, but this one ISNT a city/civilization builder game, basically you go around killing monsters and do quests, alot of the jokes are usually pop culture references or longtime jokes that only the most devoted would get.
Other than that, it's hard to "grind", there isnt PvP in the traditional way that people know it as, the main form of PvP is 'contests' like how many trophies you have and the such, in terms of grindability, you can go as fast or slow as you want. (though there is Alice's Army, a trading card game ingame...though you'll eiher have to pay meat for a booster pack someone has summoned, buy individual cards from players, or pay RL money at the time for an item which you can get to learn how to summon said packs....the item that teaches the skill is used up when used, but does cost quite a bit of meat)
The heirachy and diversity of personal achievements is thinly explained, many players try to get a high amount of shinies, either by collecting Trophies, Tattoos, items or skills.....to get many skills would involve starting the life allover again, but thats the best bit, you can choose a difficulty, a path and even potencial restrictions to make the runs more challenging and rewarding.
And theres 6 classes to play with, each with their own skill learn set and slight playstyle changes, coupled with the ability to permanantly learn skills by ascending, the game does have quite a bit of replayability, though it would look confusingly vast to newer players...unless they read the Wiki or something.
