Here's a list that only includes games that I have actually started, but for some reason or another haven't finished. This isn't a list of games that I thought were too boring to finish (although some were). Many of these games I loved, but never have the time to play.
Night Trap
Sewer Shark
Super Star Wars
Super Empire Strikes Back
Super Return of the Jedi
Uniracers
Ninja Gaiden (Xbox)
Rhythm Heaven
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Eye of the Beholder
The Uncanny X-Men
Dragon Wars
Alone in the Dark
Mega Man 7
Mega Man 8
Half-Life
Half-Life 2
Marvel: Ultimate Alliance
Dragon Quest 2
Final Fantasy 7
Chrono Cross
LIT
Excite Truck
Sonic Rush
Sonic Rush Adventure
Super Mario Sunshine
The Legend of Zelda: Majora's Mask
The Legend of Zelda: The Wind Waker
Final Fantasy: Crystal Chronicles
Final Fantasy: Crystal Chronicles: The Crystal Bearers
Mario & Luigi: Bowser's Inside Story
Infinite Space
Doom 3
Resident Evil
Resident Evil 4: Wii Edition
Resident Evil: Umbrella Chronicles
Resident Evil: Darkside Chronicles
Dead Space: Extraction
House of the Dead: Overkill
Dead Rising: Chop Till You Drop
Okami
Viewtiful Joe
God of War
Devil May Cry 3
Metroid II: The Return of Samus
Metroid Prime
Metroid Prime 2: Echoes
Metroid Prime 3: Corruption
Little King's Story
Trauma Center: Under the Knife
Mysterium
Police Quest
Maniac Mansion
Maniac Mansion 2: Day of the Tentacle
Full Throttle
Leisure Suit Larry
Rogue
Hack
Ancient Domains of Mystery
Myst
The 7th Guest
Metal Warriors
I'm OK
Double Dragon II: The Revenge
Double Dragon III: The Sacred Stones
Star Fox Assault
Metal Gear Solid
Grand Theft Auto III
Grand Theft Auto 2
World of Goo
Gish
Lugaru
Samorost 2
Penumbra Overture
Aquaria
Space Phallus
Max and the Magic Marker
Osmos
LostWinds
BIT.TRIP CORE
BIT.TRIP RUNNER
Earthbound
Lawnmower Man
Rise of the Robots
Pit Fighter
Solar Jetman
Big Bang Mini
Contact
E.T.
Dragon Quest Heroes: Rocket Slime
Fire Emblem: Shadow Dragon
Fire Emblem: Radiant Dawn
Magic Carpet
X-COM 2: Terror from the Deep
Super Punch-Out!!
Punch-Out!! (Wii)
A Boy and His Blob (NES)
A Boy and His Blob (Wii)
Manhunt
Manhunt 2
State of Emergency
Bully: Scholarship Edition
Toki Tori
Secret of Evermore
Faxanadu
Etrian Oddyssey
Orcs and Elves
Top Gun
Nobunaga's Ambition
Metal Gear
Friday the 13th
A Nightmare on Elm Street
Fester's Quest
Bill & Ted's Excellent Video Game Adventure
Castlevania III: Dracula's Curse
ToeJam & Earl
To the Earth
Snake Rattle 'n' Roll
Teenage Mutant Ninja Turtles (NES)
Milon's Secret Castle
Metroid Prime Hunters
Mortal Kombat Mythologies: Sub-Zero
Solstice
Equinox
Exodus: Journey to the Promised Land
Bible Adventures
Castlevania: Dawn of Sorrow
The Adventures of Bayou Billy
Battletoads
Altered Beast
R-Type
Dungeon Explorer
Bomberman '93
Splatterhouse
Super Paper Mario
Paper Mario
Ikaruga
Mario Kart: Super Circuit
Killer7
Battletoads/Double Dragon
Troddlers
Hydlide
Donkey Kong 64
Forsaken 64
Descent
Sonic the Hedgehog 1
Sonic the Hedgehog 3
Kid Chameleon
Golden Axe
Streets of Rage
Streets of Rage 2
Aero the Acrobat
Shaq Fu
Zombie Nation
Zombies Ate My Neighbors
Bad Dudes
Kirby Block Ball
Kirby Tilt 'n' Tumble
Teenage Mutant Ninja Turtles: Mutant Nightmare
Okay okay, I'm gonna stop before my fingers fall off.
