List of video games I've almost beaten

This is a list of video games that I have come very close to beating (usually to the end boss or similar), but could never finish. For most of these games, I gave up either because I simply couldn't overcome a specific obstacle, or I didn't find the game rewarding enough to continue. Contrast this with the list of video games I've beaten.

Game	Notes
The 7th Guest	In two separate occasions I solved all of the main house's puzzles except the microscope puzzle, so I couldn't get into the attic. Years later, I discovered that I needed to use the in-game hint book to "finish" the microscope puzzle, but I haven't yet had a desire to redo the game to get to that point again.
Bonk's Revenge (Game Boy)	Made it to the end boss my first time playing, but got a game over. Found the play control to be so bad, I didn't want to play all of stage 6 again for another attempt at beating him.
Dance Dance Revolution: Extreme	I have beaten every song except Maxx Unlimited, The Legend of Max, and Paranoia Survivor Max on Heavy, and Paranoia Survivor Max on Oni.
The Fool's Errand	Beat the majority of the puzzles, but came to a bottle neck near the end of the game where only around 3 or 4 puzzles were open, and I couldn't solve any of them.
Cosmo Police: Galivan	I played a fan-translated version of this game and made it to the last stage, but got so tired of grinding that I gave up.
Kirby's Adventure	I made it to the second form of the final boss (Dedede), but couldn't beat him, and got sick of trying.
Lands of Lore	I got over 3/4 of the way though to the war between the Xeobs and Knowles where the game drives off the rails. I didn't like the sci-fi intrusion, and I really didn't like the idea of committing genocide against an unknown race. After seeing a massive maze with tons of really hard monsters, I got fed up and stopped playing.
Ninja Gaiden	I've reached Jaquio, the second form of the final boss, but I couldn't even come close to defeating him.
SkyRoads	I've beat all roads except The Earth stage 3, and Druidia stages 2 and 3.
Super Mario 64	I've collected almost enough stars to reach the final showdown with Bowser, but I no longer have my save game file, and I don't have much interest in dealing with the awful camera and poor movement controls anymore.
Zelda II: The Adventure of Link	I've made it to the final cathedral, but got fed up with it trying to reach the end boss.