For the PC, Half-Life 1 and 2
and Portal, great puzzler-comedy.
Doom
Deus Ex
Elder Scrolls: Morrowind and Skyrim (although skyrim is a bit watered down, but thanks to the modding community)
CoD4
and Crysis 1. I guess.
Oh, and GTA 3, It revolutionized open sandbox gaming,
Battle Zone
Tetris
Mortal Kombat
Space Invaders
Pong (lolz)
Super Mario World
Ace Combat
Morrowind
Fable Lost Chapters
Wing Commander
Kirby's Dreamland
Star Craft
Dude ROAD RASH 2! I used to play that for hours with a buddy of mine!
Metroid series (up to Prime)
LoZ: A Link to the Past
Civilization series
Fallout series
Elder Scrolls series
StarCraft
C&C series
Morrowind for me. Ive gone back to it too many time. And the with mods its insane.
I love that racist little island.
Seriously, it's Deus Ex. Why? Because there is a lot of people featuring that game on their lists, so that says something.
Bioshock 1, Half-Life 2, Star Wars Knights of the Old Republic, Battlefield 2, Command and Conquer Red Alert 2 are my favorites
Here are my favorite PS2 Games. (RIP Satin Silver PS2)
Area 51
Burnout Series
Call of Duty 2: Big Red One
Crash Bandicoot: The Wrath of Cortex & Twinsanity
Grand Theft Auto San Andreas
Jak and Daxter Series
Need For Speed Underground, Most Wanted, Carbon, Undercover
Ratchet and Clank Series
Simpsons Hit & Run
Star Wars Battlefront 2
I find myself rarely replaying games these days, however there are a few I will revisit at least every few years:
The Legend of Zelda: A Link to the Past
Castlevania Symphony of the Night
Final Fantasy Tactics
All the Infinity Engine games
Here's a list of the games I feel are the greatest
Wolfenstein 3D
Doom
Samurai Shodown
Quake
Metal Gear Solid
Mortal Kombat II
The Legend of Zelda: A Link to the Past
Tenchu - Stealth Asssassins
Running around the house playing cowboys and indians with my ex . . . naked.
seriously
super mario
contra (with my little brother)
vampire the masquerade
rogue spear
half-life
D&D (all night long) with 7 of my best friends in highschool.
Nintendo:
Super Mario Brothers
Mike Tyson Punch Out
PSone:
Hot Shot Golf
Grand Turismo 2
PS2:
Spyro
God of War
Xbox:
Fable
XBOX 360:
Star Wars The Force Unleashed
F1 2011, 2012
Ghost Recon 2
Fable 2
PS3:
Tomb Raider
Need for Speed Hot Pursuit
BatMan Arkham Asylum
Fight Night Round 4
PC:
Total War Rome
Star Wars Nights of the Old Republic
F1 2013
SkyRim
RockSmith 2014
Spyro the dragon 1-3 on the ps1.
The only good spyro games ever made.
Sly Cooper series 1-3
The first one was kinda iffy in my opinion but it's still good.
Haven't played the 4th one so no opinion
Art of Fighting
The Sentinel
Armalyte
Castle Quest
Head Over Heels
San Andreas
GTA IV
Vice City
Jetpac
Half Life 2
Crysis
Star Wars
Thanatos
F.E.A.R.
Turrican II
FFVII
Another World
Tekken 3
Starglider 2
Ghosts N Goblins
Mario Kart
Street Fighter II
Operation Wolf
Time Crisis
Portal
Gran Turismo 2
Far Cry
Flashback
Abe's Exodus
Buggy Challenge
All of these games have made me say to myself "OMG! THIS IS GREAT!!"
TES III: Morrowind - Can't count how many hours I spent on that game, it's truly amazing experience. In my opinion, still the best game in the series, because of its unique atmosphere, music, and story in general!
Civilization series - I love me some good strategy game, and Civ series offer even more than I ask for. Lots of replayability, nice modding community, and that "one more turn" syndrome.
The Witcher series - Even though I'm pretty new to The Witcher games (and books), I loved every minute of it. Really mature and well executed RPG! Great story, lively characters, amazing graphics and music. I'm really looking forward to the new one to be released!
Dark Souls: Prepare To Die Edition - My honorable mention. Started the game without any prior knowledge and expectations, and got completely sucked in, then punched, smashed, sliced & stomped. Really refreshing experience in a time where every other game holds your hand and guides you every step of the way.
So many games, so little time. Such terrible memory.
Tekken Tag Tournament - Spent SO many hours on this game with my brothers.
The Civ Games. Pretty obvious answer
Super Mario 64. My favorite Mario game. Also the only one I've beaten. One of these things probably influences the other.
Crysis 1. Is it perfect? Hell no. Is it fun? You'd better believe it.
Red Faction 1 (PC). Don't play the console version. It's inferior, mostly because of the aim assist.
I've been pretty addicted to Banished lately. If you like city building games, check this shit out.
Antichamber is a really interesting one. Hard to describe other than that.
The Banner Saga is one of the best RPGs I've played in quite some time.
The Batman: Arkham games are always a good standby.
The F.E.A.R. games are awesome.
Just Cause 2 offers most of the silly antics of GTA with grappling hooks and parachutes.
FTL will suck up your life.
Burnout Revenge, muh nigga
Deus Ex is the Logan-Certified answer