I'm very guilty of jumping on these Steam deals and buying things I don't have the time - and sometimes not even the inclination - to play. This most recent round of Steam sales made me realize just how many games I need to start playing and get caught up on. Here are, to date, all of the Steam games I've purchased and either not even installed or installed and started up once and not really played. I'm so bad at this, I don't even know what some of these games are.

• Aliens vs. Predator
• Altitude
• And Yet It Moves
• Audiosurf
• Beat Hazard
• BIT.TRIP BEAT
• Cogs
• Commandos: Entire Series
• Crysis
• Crysis Warhead
• Crysis Wars
• Dead Space
• Dead Space 2
• Doc Clock: The Toasted Sandwich of Time
• DogFighter
• Droplitz
• Eufloria
• Flotilla
• Freedom Force
• Gish
• Grand Theft Auto: San Andreas
• Hacker Evolution
• Hammerfight
• Iron Grip: Warlord
• Jolly Rover
• Just Cause 2
• Kane & Lynch 2: Dog Days
• Lead and Gold - Gangs of the Wild West
• Machinarium
• The Misadventures of P.B. Winterbottom
• Mount & Blade:Warband
• Plain Sight
• Poker Night at the Inventory
• The Polynomial
• Puzzle Agent
• Puzzle Dimension
• Recettear: An Item Shop's Tale
• Rhythm Zone
• Shatter
• S.T.A.L.K.E.R.: Shadow of Chernobyl
• Star Wars: Knights of the Old Republic
• System Protocol One
• Tales of Monkey Island Complete
• Tidalis
• Twin Sector
• VVVVVV
• Wings of Prey
• The Witcher: Enhanced Edition (Just installed!)
• X-COM: Entire Series

Not that many since I don't use Steam very much. Also, there are several of these that I've gotten for free and several that I can't play because of a shitty computer: 
 

• Counter-Srike: Condition Zero (+Deleted Scenes)
• Cryostasis
• Half-Life: Blue Shift
• Half-Life: Opposing Force
• Indigo Prophecy
• Machinarium
• The Misadventures of P.B. Winterbottom
• Portal
• Revenge of the Titans
• Super Meat Boy
• Team Fortress 2

I don't want to talk about this.

I haven't finished all my Steam games, but I've at least played them all. I don't have as many as most though.

I don't want to talk about this.

I have a bunch from the Humble Indie Bundle, plus a few from just random acquisitions: 
 

• Aquaria
• Braid
• Half Life (plus Opposing Force and Blue Shift)
• Lugaru HD
• Machinarium
• Penumbra Overture
• Revenge of the Titains
• Samorost 2
• Team Fortress Classic

• Bully: Scholarship Edition
• Deus Ex: Game of the Year Edition
• Fallout 3: Game of the Year Edition
• Oddworld (All of them)
• Overlord II
• Sam & Max (All of them after episode 4)
• Knights of the Old Republic
• X-COM: UFO Defense

I don't want to talk about this.

Haven't installed (gonna have to turn off a filter for this):
 

• Lugaru HD (I can't even play it long enough to know that I can't play it)
• Penumbra: Overture

• Cortex Command
• Half-Life 2: Episode One (don't expect a blog on this soon)
• Osmos
• Revenge of the Titans
• Saira (non-Steam version from a free giveaway a bit back)
• Samorost 2
• Super Meat Boy
  

No. I did it once the last time this thread was made, and I really don't want to go through all that work to do it again. Too many dam games to list.

W..why would you buy something and not even test it out?
 
At least launch it, play a match and never touch it again *cough* Monday Night combat and Lead and Gold*

W..why would you buy something and not even test it out?  At least launch it, play a match and never touch it again *cough* Monday Night combat and Lead and Gold*

If I posted the entire list, it'd take up waaaay too much space, so I'll list the games I've bought at full price and never played... 
 
Devil May Cry 4 
Episodes from Liberty City 
Resident Evil 5 (played the 360 version, never touched the PC) 
All 3 recent Tomb Raider games AND Guardian of Light
Lucasarts Adventure Pack (Fate of Atlantis, Loom, The Dig, etc) 
Sam and Max Seasons 1 & 2 
Strongbad 
Drakensang (I love the 2nd game in the series) 
Amnesia 
Both Serious Sam HD games 
Company of Heroes series 
Civ 5 
 
I'm a terrible human being and my wallet hates me.

18 Wheels of Steel: American Long Haul

A.R.E.S

Alien Breed: Impact

And Yet It Moves

Bionic Commando

Bionic Commando Rearmed

Counter-Strike

Counter-Strike: Condition Zero

Day of Defeat

Deathmatch Classic

Defense Grid: The Awakening

Gish

Grand Theft Auto: San Andreas

Jolly Rover

The Last Remnant

Lead and Gold

Plain Sight

Poker Night at the Inventory

Recettear: An Item Shop's Tale

Ricochet

Risk II

Star Wars Jedi Knight: Jedi Academy

Titan Quest

Toki Tori

Vegas: Make It Big

The Witcher: Enhanced Edition

Gah! this post has made me sad.

I might need to Giant Bomb list these eventually.

• Ben There, Dan That
• Bioshock 2
• Bloody Good Time
• Darwinia
• Gish (just bought it)
• GTA 1, 2
• GTA IV Episodes
• Half-Life (everything except HL1)
• Lead and Gold
• Mass Effect 2
• The Misadventures of P.B. Winterbottom
• Multiwinia
• Railroad Tycoon 2, 3
• Sam & Max: The Devil's Playhouse (episodes 3-5)
• Time Gentlemen, Please

Those are the ones I barely played and can't give you an opinion on them. There are a lot more that I played for an hour or so and never got too deep in.

Key:

M - Minimal Amount Played

X - Never Played

1...2...3... KICK IT! - M

AaAaAA!!! - A Reckless Disregard for Gravity - M

Alpha Protocol - M

Atom Zombie Smasher - M

The Ball - X

Batman: Arkham Asylum GOTY - X (I have played through on 360, so don't be hating)

Ben There, Dan That -X

BIT.TRIP.BEAT - M

Borderlands - M

Braid - M (Played on 360)

Burnout Paradise - M

Riddick: Dark Athena - M

Cities XL 2011 - M

Cogs - X

Company of Heroes + all expansions - X

Dead Rising 2 - M

Death Spank - M

Defense Grid - M

Deus Ex: Invisible War - M

Dirt 2 - X

Doom 3 + expansion - X

Doom 2 - X

Dwarfs!? - M

Empire Total War - X

Final Doom - X

Frontlines: Fuel of War - X

Full Spectrum Warrior + Ten Hammers - X

GTA4 - X (Played on 360)

Hamiltons Great Adventure - X

Hitman 2 - X

Blood Money - M

Codename 47 - X

Juiced 2 - X

Just Cause 2 -M

Lara Croft and the Guardian of Light - X

Last Remnant - M

Lego Batman - M

Loom - M

Machinarium - X

Mafia 2 - X (Though plan to play soon)

Magicka - M

Max Payne 2 - X

Mirror's Edge - X (Played on console)

Misadventures of PB Winterbottom - M

Monkey Island 2 - X

Oddworld Munch's Oddysee - X

Strangers Wrath - X

Osmos - M

Psychonauts - M

Quake 2 - M

Red Faction - X

Red Faction 2 - X

Resident Evil 5 - X (Played on console)

RUSH - X

STALKER series - M

Saints Row 2 - M

Sam and Max 302-305 M-X

Shadowgrounds + Survivor - X

Singularity - X (Next on the list)

Space Chem - M

Jedi Knight + Dark Forces 1+2 - X

Thief - X

Time Gentlemen Please - X

Transformers - X

Tori Tori

Warhammer 40k DoW - M

Zeno Clash - M

I really feel terrible about myself, I was unaware it had got this ba- hey look steam sales...

@Rhaknar said:

@Scooper said:

I don't want to talk about this.

man speaks the truth

That he does. I'd rather not discuss this either.

I have played all of them at least once, but 90% of them I play once and then forget to go back.
I am starting to get through them though, just last week I completed my second steam game ever!

Haven't Played (i.e. <30 minutes/equally small amount of time) :   
 
Ben There, Dan That! + Time Gentleman, Please! (I will NEVER touch these, but for $1.49 or whatever?) 
Lead & Gold 
Penumbra: Black Plague  
Penumbra: Overture  
P.B. Winterbottom 
Portal  

I try to buy games that I'll actually play, but sometimes an assumed want turns into a massive "blegh" (or the game is fucking cheap or free) a la Penumbra. 
 
EDIT: OP, you owe it to yourself to install Shadow of Chernobyl Complete or LURK and enjoy that there STALKER game. 

I made this list last Steam sale:

Games I've Bought in Steam Sales but Never Played

Damn you Valve and your ridiculously good Steam sales. I end up buying so many games because they're cheap but then realise I've got no time to play them.

The list is ordered alphabetically.

* Indicates that I already own the game and/or have played it before but decided to buy it again on Steam.

Games no longer on the list

• AAAAAAAAA
• Beat Hazard
• Greed Corp
• Osmos
• Plants vs. Zombies GOTY

	1. Amnesia: The Dark Descent
	2. Alpha Protocol
	3. And Yet It Moves
	4. Blueberry Garden
	5. Bully: Scholarship Edition
	6. Darwinia
	7. Deus Ex *
	8. Deus Ex: Invisible War *
	9. Dead Space
	10. The Dig
	11. Doc Clock: The Toasted Sandwich of Time
	12. Dragon Age: Origins
	13. Dragon Age: Origins - Awakening
	14. Eufloria
	15. Everyday Shooter
	16. Flotilla
	17. Freedom Force vs The 3rd Reich
	18. Gratuitous Space Battles
	19. Guns of Icarus
	20. Indiana Jones and the Fate of Atlantis
	21. Indiana Jones and The Last Crusade: The Graphic Adventure
	22. Iron Grip: Warlord
	23. Jolly Rover
	24. Loom
	25. The Misadventures of P.B. Winterbottom
	26. Monkey Island 2: LeChuck's Revenge * (Special Edition)
	27. Multiwinia
	28. Nelson Tethers: Puzzle Agent
	29. Neverwinter Nights 2
	30. Neverwinter Nights 2: Mask of the Betrayer
	31. Neverwinter Nights 2: Storm of Zehir
	32. The Polynomial: Space of the Music
	33. Recettear: An Item Shop's Tale
	34. Rhythm Zone
	35. Sam & Max Episode 202: Moai Better Blues
	36. Sam & Max Episode 203: Night of the Raving Dead
	37. Sam & Max Episode 204: Chariots of the Dogs
	38. Sam & Max Episode 205: What's New, Beelzebub?
	39. The Secret of Monkey Island * (Special Edition)
	40. Uplink: Hacker Elite
	41. The Witcher
	42. World of Goo *

• Amnesia: The Dark Descent
• Trine
• Universe Sandbox
• Mount & Blade
• Mount & Blade: With Fire and Sword
• On the Rain-Slick Precipice of Darkness: Episode 1
• On the Rain-Slick Precipice of Darkness: Episode 2
• STALKER: Clear Sky
• STALKER: Call of Pripyat
• Far Cry 2

@zaglis said:

W..why would you buy something and not even test it out?  At least launch it, play a match and never touch it again *cough* Monday Night combat and Lead and Gold*

because we have more games than time

I own 380 games on Steam, and have played 30.

So yeah, I'm not gonna list them all.

@SirOptimusPrime: So, Shadow of Chernobyl is installed...and won't even run, it just crashes and I get an engine error. Trying to have Steam validate the local files now...maybe I'll try running it in XP compatibility mode or something.

(edit...doing the Steam validation fixed everything!)

Outside of things that I've purchased in the last week or so:
 
Blueberry Garden (played it a little bit, but never really got into it) 
Gish (I can't get the jumping mechanic down. I'll probably give it another chance soon)
Jolly Rover(I admit that I played it for the first time to get the ticket associated with the game, but I haven't played it since getting that achievement)
Mr. Robot (I guess I just don't get this game. Maybe I'll have to give it another go soon)
On the Rain-Slick Precipice of Darkness, Episode 1 and 2(they just won't run well on this computer. Don't know what's wrong. I played the demo just fine on my old graphics card, but my upgraded graphics card apparently does not like these games)
Red Faction: Guerrilla (bought it last month, just haven't gotten around to playing it yet)
KotoR (Game keeps crashing every time I play. I don't think I've gotten past the opening starship battle)

I'm fine disclosing my purchase history, however play-history is a whole other deal.

Revenge of the Titans 
Samorost 2 
KOTOR 
Toki Tori 
And Yet It Moves 
Genesis Rising (?) 
Gish 
Joly Rover 
Lugaru HD (like most of the people, I got it from Humble Bundle. Never even installed it). 
Oddworld Abe's Oddysee 
Penumbra: Overture 
Shank 
Star Wars Jedi Knight: Mysteries of the Sith 
Star Wars Jedi Knight: Jedi Academy 
 
And a BUNCH of games I've only played for an hour, then uninstalled them.
That counts, right? ...right? 

@Scooper said:

I don't want to talk about this.

Agreed.

I have over 125 games on Steam and I would say, conservatively, that I still need to really play (more than just 15 minutes of playing) probably around 80 of them.

Games I own on steam but have never played

Quite self explanatory. Games I've bought on steam during sales or in packs or whatnot, but never actually got around to playing. I might include some games that I have started but not played for more than a few minutes.

	1. Bone: Out from Boneville
	2. Bone: The Great Cow Race
	3. Aquaria Played about 5 minutes of this.
	4. Half-Life: Counter-Strike
	5. Counter-Strike: Condition Zero
	6. Darwinia
	7. Multiwinia
	8. Day of Defeat
	9. Day of Defeat: Source
	10. Deathmatch Classic
	11. Driver: Parallel Lines
	12. Deus Ex: Invisible War
	13. The Dig
	14. Eets: Hunger. It's emotional.
	15. The Elder Scrolls III: Morrowind
	16. The Elder Scrolls IV: Oblivion Played on Xbox 360
	17. Eternity's Child Don't even know what this game is. Probably part of a pack I bought.
	18. Evil Genius
	19. Freedom Force vs The 3rd Reich
	20. Ghost Master
	21. Greed Corp Played for about 5 minutes
	22. Half-Life 2: Episode Two
	23. Half-Life 2: Episode One
	24. Half-Life Deathmatch: Source
	25. Half-Life: Blue Shift
	26. Half-Life: Opposing Force
	27. Might and Magic: Darkside of Xeen
	28. Heroes of Might and Magic V Played for 5 minutes
	29. Heroes of Might and Magic V: Hammers of Fate
	30. Heroes of Might and Magic V: Tribes of the East
	31. Indiana Jones and the Fate of Atlantis
	32. Indiana Jones and The Last Crusade: The Graphic Adventure
	33. Jolly Rover
	34. Loom
	35. Lugaru
	36. Magnetis
	37. Max Payne 2: The Fall of Max Payne Previously played non-steam PC version
	38. Nikopol: Secrets of the Immortals
	39. Penny Arcade Adventures: On the Rain-Slick Precipice of Darkness: Episode One Just bought a few days ago. I will play this.
	40. Penny Arcade Adventures: On the Rain-Slick Precipice of Darkness: Episode Two Just bought a few days ago. I will play this.
	41. Pacific Storm
	42. Penumbra: Overture
	43. Revenge of the Titans
	44. Ricochet
	45. R.I.P. Also RIP 2 & 3, but they aren't in the database.
	46. Sam & Max Episode 201: Ice Station Santa
	47. Sam & Max Episode 202: Moai Better Blues
	48. Sam & Max Episode 203: Night of the Raving Dead
	49. Sam & Max Episode 204: Chariots of the Dogs
	50. Sam & Max Episode 205: What's New, Beelzebub?
	51. Samorost 2
	52. Genesis This represents a load of games in the Sega Mega Drive/Genesis pack that I can't be bothered to list individually.
	53. Shadowgrounds
	54. Shadowgrounds Survivor
	55. Strong Bad's Cool Game for Attractive People
	56. Tales of Monkey Island Chapter 4: The Trial and Execution of Guybrush Threepwood
	57. Tales of Monkey Island Chapter 5: Rise of the Pirate God
	58. Team Fortress Classic
	59. Thief: Deadly Shadows
	60. Vigil: Blood Bitterness
	61. Wallace & Gromit's Grand Adventures Episode 2: The Last Resort
	62. Wallace & Gromit's Grand Adventures Episode 3: Muzzled
	63. Wallace & Gromit's Grand Adventures Episode 4: The Bogey Man

Half-life 2

Half-life 2 Episode 1

Half-life 2 Episode 2

Metro 2033

Secret of Monkey Island 1 and 2

Bully

Cryostasis

Titan Quest

Civ 4

Bioshock 1 and 2

Oblivion

GTA 1, 2, 3, Vice City, and San Andreas

Crysis Warhead

Strong Bad: Cool Game for Attractive People

Stalker: Shadow of Chernobyl

Rift(bought during yesterdays sale)

Peggle

Peggle Nights

Sim City 4

A bunch of Indie packs from Xmas steam sale last year(won't bother listing them all)

I've been doing great so far in resisting Steam sales but it's a hard thing to do.

• GTA 1
• GTA IV
• Left 4 Dead 2
• Battlefield 2
• Counter-Strike
• Half-Life Deathmatch
• Napoleon: Total War

I'll list games that I have acquired off of Steam but have been unable to play (due to my lacklustre PC):

• Clive Barker's Jericho.
• Day of Defeat: Source.
• Deus Ex: Invisible War.
• Dogfighter.
• Half-Life 2: Deathmatch.
• Insecticide Part 1.
• The Misadventures of P.B. Winterbottom.
• Overlord.
• Team Fortress 2.

• Aquaria
• The Bards Tale
• Battlefield 2
• Blood Bowl
• Braid
• Europa Universalis 3
• Freedom Force
• Freedom Force vs The Third Reich
• Frozen Synapse
• Gish
• Half-Life
• Machinarium
• Osmos
• Penumbra: Overture
• Revenge of the Titans
• S.T.A.L.K.E.R.: Clear Sky
• Samorost2
• Serious Sam HD: The First Encounter
• Serious Sam HD: The Second Encounter
• Speedball 2: Tournament
• Thief: Deadly Shadows
• Total War: Shogun 2
• Unreal Tournament 3
• Warhammer 40k: Dawn of War II
• World of Goo

Yeah... I ain't proud.

• Amnesia: The Dark Descent
• Deus Ex: Game of the Year Edition
• Desu Ex: Invisible War
• Indigo Prophecy
• Lume
• On the Rain Slicked Precipice of Darkness, Episode 1,2
• Sam and Max Complete
• VVVVVV
• Warhammer 40,000 Daw of War, Chaos Rising
• The Witcher
• Worms Reloaded

6 of those games I bought during this summer sale, and I recently switched to Mac, so a lot of my Steam games I am unable to play.

Too many to list. So I won't.

I'm too ashamed to do that.

I think I have 3 categories of games for this, there's the ones I really want to complete then those I bought as I thought they would be interesting to try out and the ones that I have but have no interest in (right now).
 
Games I want to complete:

• Alien Vs Predator
• Assassin's Creed + AC II and Brotherhood
• Batman Arkham Asylum (GOTY Edition) 
• Crysis + Warhead, Wars + Crysis 2
• DIRT 2 + DIRT 3
• The Elder Scrolls: Oblivion (I don't think I will ever complete this as even if I finish the main stories there are so many quests and Skyrim is so close now!)
• Far Cry 1 + 2
• Half Life 2 Episodes 1 + 2
• Left 4 Dead 2 (This is an MP game, not really sure if it is possible to complete it!)
• Magicka (Both SP and Co-Op modes)
• Metro 2033
• Prince of Persia 
• Test Drive Unlimited 2 (Collected all of the cars and now just play to cruise or collect cash, also have to complete the new DLC challenges)
• Tom Clancy's Splinter Cell Conviction
• Unreal Tournament 3: Black Edition

• Audiosurf
• Bejeweled 3
• Defense Grid: The Awakening
• Elf Bowling: Hawaiian Vacation (great to play a game of this with my 7 year old daughter, she loves the game!)
• Killing Floor
• Plants vs. Zombies: GOTY 
• Zombie Driver

• Battlefield Bad Company 2 (finished the story mode still play the awesome MP)
• Chimes
  
• Half Life 2 (Finished the story and only have 3 out of 33 achievements that I have got!)
• Portal (Completed the main tests, not sure if I will ever finish the bonus levels)
• Portal 2 (finished the SP and co-op modes but it would be fun to play the user created content)

• Bully: Scholarship Edition
• Ben There, Dan That & Time Gentlemen Please
• Penny Arcade (both episodes)
• Supreme Commander
• Dead Space
• Borderlands
• Puzzle Agent
• Brothers In Arms: Hells Highway

I don't want to talk about this.

Aquaria
Braid
Bully:  Scholarship Edition.
Darksiders "played through the first temple"
Lugaru HD
Max Payne 2
Osmos
Red Faction 2
Samorost  2
Shadowgrounds
Shadowgrounds : Survivor 
And most of the Sam and Max episdodes
 
Seems I'm better than I thought i was.

About 190 of the 220 or so games I own. Yea, I'm hopeless.
 
Edit: It depends if you count me playing them before, but not on Steam.

@L33tfella_H: yeah im in the same boat i just keep buying but i never get to playing them and when i look back at it i didn't want most of those games :)

@GetEveryone: if you ever wanna play terraria MP hit me up :)

I just started using Steam not even a year ago, so my list will be a bit short.

• Half-Life 2 Episode 1 and 2 (played them on the 360 as part of the Orange Box)
• On the Rain-Slick Precipice of Darkness Episode 2 (Need to finish Episode 1)
• Puzzle Agent (Gifted to me a couple of days ago and haven't played it yet)
• Revenge of the Titans (Part of the Humble Indie Bundle #2, just haven't gotten around to it)

Magicka and Half-Life 2. Both because I want to get my graphics card in before I play them.

Key:

M - Minimal Amount Played (<10 minutes)

X - Never Played

• X Alien Breed 2: Assault
• M Aliens versus Predator Classic 2000
• X Braid
• M Command and Conquer: Red Alert 3
• M Counter-Strike
  
• X Counter-Strike: Condition Zero Deleted Scenes
• M Day of Defeat: Source
  
• M Deathmatch Classic
• M DiRT
• M FINAL FANTASY XI
• X Fuel
• M GRID
• M Half-Life 2
• X Half-Life 2: Episode 1
• X Half-Life 2: Episode 2
• X Half-Life 2: Lost Coast
• X Half-Life Deathmatch: Source
• X Half-Life: Blue Shift
• X Half-Life: Opposing Force
• X Half-Life: Source
• X Machinarium
• X Osmos
• M Portal
• X Red Orchestra: Ostfront 41-45
• X Revenge of the Titans
• X Ricochet
• X Shadowgrounds
• X Shadowgrounds: Survivor
• M Star Wars: Knights of the Old Republic
• X Team Fortress Classic
• X ToCA Race Driver 3

I've actually played all the games I've bought, however some for just one session, and some for less than an hour.

Got 200+ games on Steam now. I've played about 1/10 of those. Worst part is that I don't even have a PC that runs every game..

Using the awesome script from here, a -1 is not played at all. I've included anything under two hours, in an effort to shame myself into getting to these.