omg this is gonna be a long list lol
Lets start from the oldest to the newest.
Odyssey - I guess the Light Gun Game lol
Fairchild Chennel F - idk, um I guess Bowling? I played it the most with a friend.
RCA Studio II - Crap none of these are good, I guess Space War.
Atari 2600 - While I loved many games, the game i recall playing the crap out off is Solaris
Tandy TRS-80 - Didn't play this a lot, um Poltergeist i remember playing. lol
Bally Astrocade - The Incredible Wizard
MPF MP1000 - um... Brickdown I guess. lol
VC4000 - Monster Man
Odyssey 2 - K.C. Munchkin!
Intellivision - Burgertime
Atari 400/800 - Pac-Man (was the first one I played that felt like the arcade)
MB Microvision - Block Buster
Commodore VIC-20 - Of the few games I have for this, I guess Pac-Man
Creativision - Crazy Chicky (it's Pac-Man with a chicken lol)
TI-99/a - Munch Man
Emerson Arcadia 2001 - Cat Trax
ColecoVision - Donkey Kong
Commodore 64 - I have no idea, barely used it. lol
Vectrex - Star Castle
Atari 5200 - Miner 2049'er
Mattel Aquarius - Never played it, all the games I have for it are sealed. lol
Nintendo Famicom - Rockman 2
Sega SG1000 - Flicky
Tomy Tutor - Traffic Jam
Casio PV1000 - Amadar
Cassette Vision - Pak Pak Monster
Super Cassette Vision - Miner 2049'er
Game Pocket Computer - um I guess the puzzle one? (only have the 2 built in games for it)
Famicom Disk System - Super Mario Bros. 2
NES - OMG this one is tough, so many, but I gotta say The Legend of Zelda
Atari 7800 - Ninja Golf (I had a laughing blast playing this)
Sega Master System - Astro Warrior
Atari XE - Ms. Pac-Man
Action Max - They are all crap, lol
PC Engine - Toilet Kids (don't have a lot of PCE games)
Gameboy - Tetris
Sega Genesis - oh man so many to choose, But I guess I gotta go with Sonic the Hedgehog 2
Turbo Grafx 16 - Splatterhouse
Atari Lynx - Ninja Gaiden
Neo Geo MVS - Metal Slug (series)
Neo Geo AES - SVC Chaos: SNK vs Capcom (played the slug series more on the MVS)
Amstrad GX4000 - My Pal TV won't play this stupid console. lol
Sega Gamegear - um Don't use my Gamegear a lot, um I guess I played with mega man for a while. lol
Super Famicom - Chrono Trigger
Super Nintendo - Theres so many to list, but over all Zelda: Link to the Past
FM Towns Marty - Viewpoint
Commodore CDTV - I have one copied game for it, Defender of the Crown
CDi - wow, I guess Hotel Mario. (All though I love pulling out those crappy Zelda games once in a while)
Watara Supervision - um... I guess Treasure Hunter I played the longest? lol
Memorex VIS - Nothing is worth playing on this console.
Turbo Duo (T16CD) - Ys Book I & II
Sega CD - Sonic CD
Atari Jaguar - Tempest 2000
Mega Duck - Pile Wonder (i guess) lol
Laseractive - um... Space Berzerker i guess. Both games I have suck. lol
Amiga CD32 - Now That's What I Call Games (I found a lot of fun enjoyable games on this) lol
3DO - Road Rash
Neo Geo CD - Sonic Wings 2 & 3
Playdia - I have yet to find something worth playing on this system.
Sega 32X - Doom (this was the 1st time I ever played doom)
PC-FX - Der Langrisser FX
Tiger R Zone - um... ya.... I'll pass lol
Bandai Pippin - Super Marathon
Sega Saturn - Panzer Dragoon Saga
Virtual Boy - Jack Brothers
Sony Playstation - wow to many to mention, but I guess I'd go Metal Gear Solid
Atari Jaguar CD - um... ya... lets move on. lol
Casio Loopy - Only game i have is just a dress up game..... ya moving on. lol
Funtech A'Can - African Safari (only game I have that you can play Madonna vs. Hitler) lol
N64 - Legend of Zelda: Ocarina of Time
Tiger Game.com - Lights out i guess lol
Gameboy Color - Legend of Zelda: Oracle of Ages/Seasons
Wonderswan - Flash Koibito-Kun i guess. lol
Noun - Ballistic I guess (only have 2 games)
Neo Geo Pocket - Metal Slug Games
Sega Dreamcast - Shenmue
N64DD - F-Zero Expansion
PS2 - holy crap this is hard, But if I had to pick one that I played for the longest time it's Final Fantasy XI Online. It was my 1st and last MMO I'll ever play. lol
Gameboy Advance - Final Fantasy Tactics
Xbox - Star Wars: Knights of the Old Republic
GameCube - Super Smash Bros. Melee
Wonderswan Crystal - I only played this system once, and nothing memorable. lol
Atomiswave - Dolphin Blue
Tapwave Zodiac - Doom
Nokia N-Gage - I only played MotoGP the other 2 games I own are sealed.
Timetop GameKing - um... well theres.... ya nothing. lol
Xavix Port - Bowling
Zapit Gamewave - I've yet to hook this system up. lol
Gizmondo - Sticky Balls!!!!!
Xbox 360 - this is a tough call, I guess Skyrim or Fallout 3.
NDS - New Super Mario Bros.
Hyperscan - Nothing. lol
Sony PS3 - The Last of Us (this is another tough one)
Wii - Super Smash Bros. Brawl
3DS - Legend of Zelda: Link Between Worlds
Wii U - New Super Mario Bros. U
PS4 - Killzone Shadow Fall (only game i own for it) lol
XBone - Dead Rising 3