Have you ever played a game that, for whatever reason, was plagued with glitches and errors? No matter if they are because of a damaged CD or cartrige, corrupted ROM or just a bad game, did you keep playing it until you beat  it? How was it? Why did you keep playing it?

EDIT: When I say broken, I'm not talking about an unbalanced game, unfair dificulty or dumb mechanics. I'm talking about finding errors that are obviously not supposed to be there. Like playing Goldeneye 64 with every character having the spinning glich, or distorted music because a damaged console.

i beated the first Neptunia game... that game has a lot of problems gameplay wise...

Yeah, shin megami tensei 1. The battle system was broken for boss fights, all you had to do was use an electric or ice attack on a boss to stun them for the entire battle. Then you just whale on them and win easily. Unless it was one of very few bosses immune to electric or ice attacks. Still a pretty good game though.

Deadly Premonition, multiple times. :P

As for...broken, broken, to the point of game-breaking and still pushing me through, perhaps Fallout:New Vegas. I never found anything game-breaking, as in a mission not being finished or so, but more often than not I would glitch through walls, important NPCs would vanish for weeks, dialogues would repeat themselves for no apparent reason, I would fall into oblivion which caused frustrating deaths, I'd open a door only to be stuck forever in the loading screen, seeing enemies with a flying sniper rifle in front of them using the punch animation to shoot at me...errr...I don't know what else, but there are tons of other things.

I did it because I found the game extremely enjoyable. Heck, it is one of my favourite games ever made.

I beat many games with a broken NES. I can't specifically say what was wrong with it, but it would cause a variety of glitches depending on the game. It would cause something like Solomon's Key to freeze randomly (and I could tell when a game would freeze, because the music was different...missing some of the midi instruments). But the worst was Ninja Turtles 2 (The Arcade Game). It could cause random glitches including projectiles to get stuck mid-air in some kind of spasming animation. You'd have to run into the projectile to make it disappear because the game wouldn't let you advance while the projectile was there having some kind of fit. That was all well and good, but there was one level where the foot soldiers were throwing spears. The spears wouldn't disappear when you ran into them. So you literally were stuck and had to hit the reset button. Those were bad.

Twice actually.

1) Sonic Heroes on GCN. Due to my old Gamecube's faulty laser the game was jittery and would crash so and so often, but I just couldn't resist playing it and tried beating it until I finally could. (a lucky streak of not freezing so to speak)

2) Metal Gear Solid 3 on PS2. The whole game was working perfectly fine, up until The Boss. 8 out of 10 tries the game would freeze due to the disc being all scratched. Put some toothpaste on the disc which temporarily solved the problem and gave me time to beat the game (it wasn't working very well though, but at least it didn't hang itself)

*I had the MGS CD buffed at a local video game store last March or so, since then it's working perfectly fine again.

Fallout 3 on PS3, omg what a journey, you never know what step or jump is going to lock you into the map or finding deformed characters or just randomly crashing from time to time, sometimes even an infinite load screen. I really don't know why I played it so much.

Sonic 06. I beat every campaign of that game.

my mom made me take a hammer to a couple of my nes games as punishment for whatever it is i did. does that count? i feel like if i read the title but not the OP it is a perfect fit!

Yeah, several ones.

The first one was Ultima IX at launch.

I played them because they were still fun games.