What is a game you still haven't beaten to this day?

Devil May Cry 3 on Dante Must Die mode. Same as Vergil Must Die mode.

Touhou 7 phantasm.

Dark Souls. hard as s**t and i got a sense of wasting my time after 30 hours.

Tetris for my org Gameboy. Also simpons game and I believe cool spot as well on the NES. On pc there is a billion games xD

D00M II: Hell On Earth. Icon of Sin is kinda hard.

Skyrim.

Many, but most of them I will never complete. The first one I can thing is Diddy Kong Racing :(

Maniac Mansion, it's been more than 20 years now.

Bioshock Infinite - Think I was about 2 hours from the end when it broke.

If I couldn't beat a game I would stop playing it.

Septerra Core. The game is very long and the quests get a bit tangled up + the further you are in the game, the more combat the game hurls at you and it's getting quite tedious. I played the game like four or five times, always getting about three quarters to the finish but then i just took a break.

There are quite a few, so I'll just go with the first PC title. Betrayal in Antara. My dad made it to disk 3, but I never got through disk 1.

dragon age, it never ends -.- i still play it sometime, i want to finish it.. but it is taking sooooo long

I have lost some saves due to an unfortunate format that had to be done due to a power surge, so half of planescape torment and my neat FF VII saves at lvl 99 with full materia... I didn't have the heart to start all over.

Bioshock 2 I just can't seem to get into as much as the first..

mario forever... ;/

Dark Colony

Beyond divinity, it was quite buggy back then (not sure they fixed it though) and my save was corrupted... maybe i'll try it again since i bought it on steam.
Planescape tornment, played as a mage and near the end there is a level where you play without your party, couldn't do much with a mage and was disappointed and still can't get back to it to finish.
Baldurs gate 2, played with not full group so i reached the max level somewhere at dark elves... lost interest because of it, still hoping to play it again and finish.

Grand Theft Auto San Andreas - second most played game in Steam, didn't get any close to finishing it.

The original Ninja Gaiden.

I dunno if anyone else ever played Empire Strikes Back on the gameboy, but......I never managed to escape hoth :P

A list of games I own that I never beat: Bioshock 1, Assassins Creed, Darkspore (valid reason for this game, because of how shitty EA is, I can't even fucking redeem my key. I have the damn retail version.), Regular spore (never killed off grox or reached center of universe.), Supreme Commander + Supreme Commander: Forged Alliance, Halo 2 (PC :D), Star Trek: Klingon Academy (and old game, would have it beat if it worked properly on Win7, but I got a new comp when half way through the campaign.), Starcraft (I just suck at it.), The Sims (I don't know if this counts. I own it, but I don't like it or play it, and no way to actually beat it.).

That's the PC games I have IRL copies of. Now for console:
Sega Genesis: Shaq Fu (Yes, I actually do have a copy of the alleged worse version of a horrible game. I've played it. It's about as crappy as you think.), Alienstorm (this game is also on steam from what I saw, I've played it, don't waste your money on it.), Sonic Spinball (I love this game. I just suck at it.), Sonic the Hedgehog 2, Zoop (I've never even loaded this up. The weird cover art and name just keeps turning me away.). NES+SNES: Hydlide (Yup.), Tetris 2. PS2: Shadow of the Colossus, SOCOM: US Navy Seals.

That's the games I have IRL copies of. Now for my steam games:
X2: The Threat, Towns, Miner Wars Arena (got it through tremorgames.), Geneforge 3-5 (beat first two on non-steam copies of the game before I owned it within legal means. I buy games I pirate, if I like them.), Galactic Arms Race (does this game end?), Command And Conquer (Allied and rising sun I never beat. Won Soviets on non-steam copy.), Burnout Paradise, Super Meat Boy, Snapshot, Shank, Shank 2, Offspring Fling!, NightSky, Hammerfight (I beat campaign, but I won't truly have beat it til I reach the 100th arena level.), Gish, Crayon Physics Deluxe, Cogs, Closure, Cave Story+, BIT.TRIP RUNNER (I would have beat it if my pseudo-OCD wasn't stopping me from beating a level without all gold D:.) The Binding of Isaac, The Basement Collection, And Yet It Moves, All the half-lifes, GTA, GTA 2, GTA VC (I beat GTA III years ago on xbox), GTA SA, GTA IV, GTA EFLC, Ninja Reflex: Steamworks Edition, Space Pirates and Zombies, Killing Floor (it has a co-op mission thing now.), Evochron Mercenary (it has this campaign like thing.).

As you can see, I own a lot of games. Yeah, I wrote an damned essay for this topic.

Bioshock 1.

Super Meat Boy

Spyro 2: Ripto's Rage for the Playstation 2.
Dang save file kept on deleting itself.