Looking for grinding game to spend whole New Year's Eve by playing it

GemCraft - Chasing Shadows - I beat this in 129 hours. Still havent won every map on highest difficulty. You can upgrade your stats.
Nation Red - 65 hours - beat the campaign and have 35% of achievement, But no real stats
King's Bounty: Warriors of the North - 56 hours - although I don't know if this is proper cause it's story driven RPG
One Finger Death Punch - 30 hours - extremely fun, should run on toster :) . But no stats, only skill
Rogue Wizards - 25 hours - extremely grindy
Rogue Legacy - 24 hours - fun, grindy rougelike platformer with stats (you can build your castle!)

Heh, Clicker Heroes.

You should try Steamworld Heist, it's pretty good and can be a little grindy if you want to finish all missions with a good ranking. And it's already in your library so you don't even have to spend any money.

Warframe, play that

I would say Warframe and/or binding of isaac

Bardbarian

Stardew Valley, Tales of Maj'Eyal, Starbound, Neo Scavenger, UnReal World, FTL, Enter the Gungeon.

tHE BEST IS THE DIvision, new years atmosphere, i think you can join to me in New years eve while i will be celebrating in the division! :)

Rainbow Six Siege

Immortal Redneck has a certain amount of grinding, it having rogue-like elements with a persistent skill tree.
Same for Rogue Legacy, although that's a platformy castlevania-influenced thing, not an FPS.
Well, basically anything vaguely roguelike-like with stuff that persists in between runs counts.

Also:
Diablo 3 + Reaper of Souls is a lot better with friends, but single-player should be fun enough to keep you busy for an evening.
LEGO whatevers tend to have an amount of grind to them, with the gameplay being somewhat repetitive and plenty of studs to collect before you can unlock everything.

runescape.
Elite: Dangerous also doesn't take a powerful PC to run.
and Kingdom is a great game but I wouldn't call it grindy

1.Download dota 2

2. try to learn it
3. rage unistall
4. download again
5. learn again
6. u know to play it now go for normal
7. normal game not funny
8. start ranked
9. meet a lot of stupid humans
10. think about new pc and better games :)

I see you have Silent Age... It doesn't look like much but I liked it. Also looks like you have put a lot of hours into Terreria... so maybe Starbound ?

Sakuracllicker, because NSFW :D more seriously, stardew valley, factorio

Mugen Souls maybe? Or, honestly, any game by Idea Factory usually has varying levels of grinding in it ranging from "yeah, that'll take a week or so" to "WTF, that will take FOREVER!". Out of the ones I've played Mugen Souls would take the longest (I've read it takes somewhere along the lines of 200+ hours) to 100%. And it's mostly insane stat boosting which is what you said you are interested in. ;P

If that sounds like too much, then all the Hyperdimension Neptunia games (also by Idea Factory) take quite a while to finish (you can check out how long each took me to 100%) while not just being mindless stat grinding. They actually have great stories in them too! :D

A girl adrift

Try Crypt of the Necrodancer. I just got started, but I feel it will eat hours upon hours of my time.
Also consider Dota 2 if you dont value your social life (and life in general).

Slime rancher

No mans sky, actually its a good game

Very different from what you say but a shot in the dark...

Star Wars Galactic Battlegrounds or
Dawn of War I or
Age of Empires III

Star Wars doesn't involve grinding for things, but it is very time consuming I used to play it all the time. There is a scenario editor where you can spawn whatever you want with infinite possibilities of battles. The missions are pretty interactive too and have variety overall. Dawn of War and Age of Empires are other time consuming games that are a lot of fun and you could say Age of Empires III has a grind feel to unlock things.

This is from my experience on an under-par laptop.

grinding is what i escape from, i think any mmo game will be good

Nice game here that you apparently don't have yet : http://store.steampowered.com/app/262060/Darkest_Dungeon/

friend got me spacebound, so addicted