That's mind-boggling to me.

Anyway...

3. Fallout
2. Deus Ex
1. Morrowind

The rest are usually in flux.

I can list 20 but in no particular order as one day it could be one thing and another something completely different. Will list platform also :

Demons Souls - PS3
Dark Souls - PS3
Farcry 2 - PC
Crysis - PC
C&C 3 - PC
Warhammer 40k Dawn of War - PC
Batman Arkam Asylum - PS3
IWD 2 - PC
BG 2 - PC
Mass Effect 2 - PS3
Gears of War 2 - 360
ES Skyrim - PC
ES Oblivion - PC
GTA Vice City - PC
Fallout NV - PC
Giants Citizen Kabuto - PC
Assassins Creed 2 - PS3
SpellForce 2 - PC
Last Ninja 2 - Commodore 64
Judge Dredd : Dredd Vs Death - PC

Loads more favourites but my list would be endless.

It be too hard for me to list my top 20. But I can list a few games that will be at least high up.

S.T.A.L.K.E.R. Series
Metro 2033
Amnesia: The Dark Descent
Penumbra Series (possibly im not too sure just yet as im playing through them right now)

Here's mine: :D

1. Thief
2. Deus Ex
3. Command and Conquer: Generals
4. Rise of Nations
5. Silent Hill 2
6. Half Life
7. Far Cry
8. Baldurs Gate 2
9. Temple of Elemental Evil
10. Warlords Battlecry 3
11. Diablo 2
12. Witcher 2
13. Witcher
14. Devil May Cry 4
15. Amnesia
15. Forsaken
16. Unreal Tournament 2004
17. Doom 3
18. GTA 3
19. Sims
20. Commandos 2

Immediate thoughts...

Quake 1 + 2
Freelancer
Rise of Nations
C & C
Mass Effect 1 + 2
Mega lo Mania(Mega Drive)
Lemmings (Mega Drive)
Dizzy Series (Spectrum)
Streets of Rage (Mega Drive)
Settlers 2
Starcraft
Civilization series

There will be plenty of others I don't remember at this point but you get the idea.

In no specific order:

Super Mario 64
Star Control 2
System Shock
Ocarina of Time
Phoenix Wright: Ace Attorney
Counter-Strike
Half-Life 2
Deus Ex
Super Mario Bros.
GTA: San Andreas
Pokemon Red/Blue
Final Fantasy IX
Mario Tennis
Duke Nukem 3D


all i can think of ATM

1. Re-Volt
2. Heroes III Complete
3. Rayman
4. Worms Armageddon
5. Outcast
6. Space Rangers 2
7. Lego Racers
8. Minecraft
9. Kao The Kangaroo
10. Hexen II
11. Need For Madness
12. Frogger 3D
13. Demonstar
14. Stickman Warfare
15. Dig Dug Deeper
16. Braid
17. Supreme Snowboarding
18. DYNA Blaster
19. Pac-Man: Adventures in Time
20. Heavy Hogur

Off the top of my head, with a little bit of randomness thrown in:

01. Planescape: Torment (1999)
02. Day of the Tentacle (1993)
03. Monkey Island 2: Le Chuck's Revenge (1991)
04. Sam & Max Hit The Road (1994)
05. Psychonauts (2005)
06. Grim Fandango (1998)
07. Beyond Good and Evil (2003)
08. Neverwinter Nights (2002, for the community aspects)
09. Baldur's Gate II: Shadows of Amn (2000)
10. Forgotten Realms Unlimited Adventures (1993, for the community aspects)
11. Chrono Trigger (1995)
12. Time Gentlemen Please! (2009)
13. Castle Crashers (2006)
14. Blocks That Matter (2011)
15. Fortune Summoners: Secret of the Elemental Stone (engl. 2012)
16. Arx Fatalis (2002)
17. Eye of the Beholder II: The Legend of Darkmoon (1992)
18. Lands of Lore: The Throne of Chaos (1993)
19. American McGee's Alice (2000)
20. Nox (2000)

Yeah, not that rich in variety, but that's how I feel right now. :)

Listing my favourites is hard. I've played a lot of games, and my preferences will vary from day to day. Here is an attempt though:

1: Dwarf Fortress
2: Planescape Torment
3: Victoria 2
4: Civilization 2 (for nostalgic reasons, 4 is probably objectively better, but I just like Civ 2)
5: Super Metroid
6:Jagged Alliance 2 (recent entry for me, but it left such an impression on me that I can't leave it out from the list)
7:Majesty: The fantasy kingdom sim
8: Fallout 2
9: Thief 1
10: Morrowind
11: Riven
12: Syberia
13: Stars!
14: Hearts of iron 2: Arsenal of democracy OR Hearts of iron 3 (with expansions)
15: System shock 2
16: Drakensang: River of time
17: Age of Wonders 1
18: Europa Universalis Rome (with expansion)
19: Gothic 1
20: Aquaria


If I were to create this list tomorrow, it would not look the same.

Sorted by length of title :p

Mafia
Portal
Deus Ex
Rayman
Theme Hospital
Super Meat Boy
The Nomad Soul
Dungeon Keeper 2
Beyond Good & Evil
Worms Armageddon
The Longest Journey
Little Big Adventure 2
Hitman 2 : Silent Assassin
Splinter Cell : Chaos Theory
Heroes of Might and Magic III
Call of Duty 4 : Modern Warfare
The Witcher - Enhanced Edition
Commandos 2 : Men of Courage
Star Wars : Knights of the Old Republic
Supreme Commander : Forged Alliance

1. Crusader: No Remorse
2. Deus Ex
3. Operation Flashpoint: Cold War Crisis
4. Ecco the Dolphin
5. Half-Life
6. DOOM
7. Wing Commander III: Heart of the Tiger
8. Duke Nukem 3D
9. Metal Gear Solid
10. Resident Evil 2
11. Outlaws
12. Zombies Ate My Neighbors
13. Mega Man Legends
14. Thief 2
15. Legend of Legaia
16. Freelancer
17. Team Fortress Classic
18. The Elder Scrolls III: Morrowind
19. Sonic the Hedgehog 3
20. Fallout

Wow, this list was harder to compose than I thought it would be. I actually put some serious thought into this, and I still had several excellent games replaced by others, so this may yet not be my definitive list yet merely a decent approximation. It's funny that there are very few newer games I could consider favorites, and those which are tend to be from smaller (indie) devs. Also to note is the fact that while I quite enjoy RPGs I find it difficult to include any of them in this list. It's strange how I've also quite enjoyed console games for this past decade, but no matter how fun those games might have been none of them can crack my fav list. I wonder why that is.

In no particular order:

X-Wing Alliance
Freespace 2
Doom 2
Civilization IV
Master of Orion 2
Starcraft
System Shock
Trackmania United
Worms
Unreal Tournament '99
Heroes of Might & Magic 3
Descent
Cave Story
The Longest Journey
Machinarium
Day of The Tentacle
Roller Coaster Tycoon 2
Aquaria
Diablo 2
Zuma
Bejeweled 3

Too tough to rank them, but my 20 are:

Deus Ex (all 3 of em)
Super Meat Boy
Prince of Persia: Sands of Time
Baldur's Gate 2
Fallout 1 & 2
Mass Effect 1 & 2
System Shock 2
Morrowind
Face on Mankind
Age of Empires
HOMM3
Diablo 2
Dragon Age: Origins
Kinect Sports
Rainbow Six
Trine
Enslaved
Arcanum
Tetris

01. Pokemon Yellow
02. Dreamfall
03. The Treehouse (1991 Educational Game)
04. Full Throttle
05. Curse of Monkey Island
06. The Secret of Monkey Island
07. Loom
08. The Dig
09. Grim Fandango
10. Sam and Max: Hit the Road
11. TheLongest Journey
12. The Legend of Zelda: A Link to the Past
13. Final Fantasy IV
14. Chrono Trigger
15. Pokemon Snap
16. Earthbound
17. Portal
18. Gemini Rue
19. Super Mario 64
20. Tales of Monkey Island

Oh the nostalgia!

No particular order.

Total Annihilation (PC)
Doom 2 (PC)
Diablo 2 (PC)
Starcraft (PC)
Half-Life (PC)
Half-Life 2 (PC)
Borderlands (PC)
Ocarina of time (N64)
Sonic 2 (Genesis/Mega Drive)
Jurassic Park (Genesis/Mega Drive)
Disciples 2 (PC)
Fallout: Tactics (PC)
Pokemon: Yellow (Gameboy)
Jet Force Gemini (N64)
Dune 2000 (PC)
Supreme Commander (PC)
Syndicate (PC)
Mortal Kombat (1,2,3) (PC/Console)
Dawn of War (PC)
Goldeneye 007 (N64)