FFX
Ar Tonelico 2
Bastion
Final Fantasy Tactics (Advanced)
Fire Emblem series
Advanced Wars series
Wind Waker

The Walking Dead
Legend of Mana
Chrono Cross
Earthbound
Pokemon Heartgold
Shadow Man
Tales of Symphonia
Final Fantasy IX

Front Mission 3
NHL Hitz series
Fallout series
Metal Gear Solid series
Day of Defeat + Day of Defeat: Source
Quake 3/Live (CTF)
Call of Duty 2/4

Counter Strike Source pre orange box 'update'

Baldur's Gate 2
Planescape: Torment
The Witcher 2
Dragon Age: Origins
Unreal Tournament (UT99)
System Shock 2
DotA 2
Quakeworld/CPMA/Quake Live

Wc3 Dota
Chrono trigger
Megaman 2
Megaman.EXE #2or5
Bighurts baseball(lol one stoke you're out with 98mph knuckle balls)
MGS snake eater
Quake 3
AoE 2+expansion.
And thatbninja turtle game on Sega.

barkley, shut up and jam: gaiden and crystalis NES

Vampire: The Masquerade - Bloodlines

FF7, Blade runner on PC (1997 game), original dota (when it was a mod of WC3)

And, my favorite game of all time,

Resident Evil. (The first game on playstation 1 was fucking terrifing when i was like 10 years old. I was so scared.

FF8-10
legend of zelda ocarina of time/ majora's mask
resident evil 2 / 6
bioshock infinite
farcry 3
the walking dead
all GTAs
chrono cross

Metroid Prime 1-3
LoZ:Skyward Sword
Sonic Adventure 1+2
Sonic Generations
Super Meat Boy
Animal Crossing/Wild World/hopefully New Leaf.

How has Kingdom Hearts series not been said yet?! Those games were my childhood.
Other than that:
Borderlands 2
Fire Emblem
Dragon Quest
and the Crash Bandicoot and Spyro series.

Psychonauts
Plants vs. Zombies
Time Splitters 2
Fire Emblem
Portal
Yoshi's Island

Crysis, Bioshock (1 and Infinite), the Half-Life series, Battlefield: Bad Company 2.

Edit, just saw Kurt's post, it's true that Timesplitters was really freaking good. Honorable mention: Timesplitters 2 and Future Perfect.

Too many to list, but here's a few:

Mother 3
Hotel Dusk
Snowboard Kids 2
Zelda: Windwaker
Half Life series
Ace Attorney Series
Ghost Trick
Metal Slug 3
Bastion
Bully
Cave Story
Deus Ex 1 and Human Revolution
Resident Evil series (minus ORC and 6, those are awful)
Silent Hill 1,2,3
Penumbra Series
Amnesia
Monkey Island series
Sam and Max series
Resonance
Metal Gear Solid 3
Thief
Hotline Miami
Pokemon Main Series
Yoshi's Island

That got a bit long.

for the computer, borderlands, fallout 3/new vegas, both batman games. other wise i'd say the paper mario and pokemon series

ratchet and clank going commando, by far my favorite, but 1,3,5 are all amazing
spyro 1,2,3
Advance Wars
Advance Wars 2
Advance Wars Dual Strike

omgpop billiards with highfive

Touhou.

No but I also really enjoy a lot of Single player games like the Shin Megami Tensei series, and Okami.

Basically I'm just a fanatic when it comes to RPG.

Bioshock
Fallout 3 and NV
Far Cry 3
Borderlands 2 was pretty darn fun
Portal
Portal 2

Xenogears

MGS 1 & 3, Kingdom Hearts and Crash Bandicoot

Gunz: The Duel!

WarRock pre pay to win

Persona 4
n64 zelda

Final Fantasy Tactics, FFX, FFX-2, FFXII, Timesplitters 2 & 3, TF2 and Skyrim are among some of my favorite games. Not sure if I have a specific favorite though.

Global offensive is really fun, but frustrating as all hell sometimes.
Killing floor is a lot of fun with friends and in small doses.
The S.T.A.L.K.E.R series has got to me my favorite single player game ever, really excited for Survarium.
Timesplitters 2 was so much fun as a kid, still is a fun game to this day. I wish they would make a new one.

http://i.imgur.com/ioeOnz5.jpg

I'm big into wasting my time with pointless classification, so I've made millions of these 3x3 things. But yeah, I tried to keep everything there to one series, or Mega Man Legends 1 and X4 would be there too. May he rest in peace. Also big ups to everyone who said Chrono Cross.

Wind Waker
Hear Gold/Soul Silver
River City Ransom
Metro 2033
Half Life
Earth Bound
Starcraft
Mario Galaxy

SSBB, FC3, CS:GO is pretty fun.

I like wow and Street Fighter X Tekken