Sorry guys, but as a gamer for last the 40 years, there's simply been waaaaay too many great gaming experiences in my life to list just one, so off the top of my head here's....I dunno...22 in no particular order?
1)Getting an Atari 2600 for the first time in 1981 and spending hours into the night with my cousin playing all sorts of games for it.
2)Ditto with the Atari 5200 and Ms Pac-Man.
3)Going to Shakey's Pizza almost every weekend with my cousins and playing all the cool arcade games there.
4)Playing Donkey Kong Country co-op with my cousin in the 90's.
5)Seeing and playing the Deluxe sit-down cabinet version of Rave Racer at Pac-Man arcade for the first time. I knew I wanted to bring that experience home some day at that moment.
6)Going to E3 multiple times during the Sega Saturn and PS1 era. There was no other con in the WORLD as fun as E3 during that time. It was 1000x better back then.
7)Buying and playing Rage Racer for the PS1, along with the Mad Catz steering wheel, and not understanding how to drive any of the cars in the game for the first day or so, then having it finally click with me and discovering the fact that I can drift these cars around all the corners, while still maintaining speed. Blew my mind and got me completely hooked on the entire series ever since. Then proceeding to clock over 400hrs into the game.
8)Beating Dungeon Master on the Amiga for the first time and the last hour leading up that point.
9)Buying a Neo Geo for the first time, and having actual ARCADE games in my house!!! Then playing the Samurai Shodown series over the next few months with my buddy and getting my ass kicked lol. Ridiculously fun times!
10)Playing OutRun 2 on the OG Xbox online. Met a lot of cool friends.
11)Playing Ridge Racer 6 on Xbox 360 Online. A Ridge Racer game you can play on-fucking-line! Nuff said. An amazing couple of years.
12)Playing Ridge Racer 7 on PS3 online. Crazy good competition and a stupid amount of fun. Was hooked like a crack angel on the game. Arguably the best Ridge Racer game in the series IMHO.
13)Driving the Skippy in iRacing and getting my first win online. What a rush!
14)Getting my first Direct Drive FFB steering wheel a couple years ago and playing all my favorite racing games with it.
15)Getting GIMX working for the first time on PC.
16)Getting all Golds in the Gran Tursimo 3 License tests.
17)Discovering and setting up MAME for online network play with my friend for the first time using a program called Kaillera, and then again few years later using another program called mame Hub. Very fun times! Playing retro 2D games online WAY before Nintendo/Microsoft/Sony made it a thing.
18)Discovering the ridiculously awesome and underrated programs GGPO and Supercade and the fact that they allow you to spectate people playing all kinds of retro fighting games online with very little lag. Blew my fucking mind and delivered many hours of entertainment! Thankfully now we have Fightcade to continue carrying the torch!
19)Discovering that several games in my favorite racing series of all time...Ridge Racer, can be played on PC via emulation with a force feedback wheel, high quality pedals, and H-Pattern gear shifter, basically mimicking the arcade cabinet experience, was phenomenal to say the least. Particularly when I first got the original arcade Ridge Racer working in Mame with my wheel, H-pattern shifter and pedals, and beating it for the first time ever. Absolutely bananas. Ditto with Ridge Racer 2 PSP, a game that wasn't even designed for wheels, etc. Just madness.
20)Playing F-Zero GX for the first time, emulated in Dolphin, with full working force feedback and wheel support, and on my giant 110" projection screen running in 4K upscaled res, at 60fps. If there's an experience that deserves the label "Heavenly", then that was it.
21)Now take that same experience I wrote above in #20 about F-ZeroGX, and multiply it by 10, because that's what it's like when you add VR. F-ZeroGX in VR = ORGASMIC!!!!!
22)Last but not least, putting on my Oculus Rift a few months ago, and driving a modded track in Assetto Corsa called The Shuto Expressway C1 Loop which is a 1:1 replica of the real Japanese Freeway, and the same Japanese freeway the arcade game Wangan Midnight is based off of. Driving that track at night in VR.... That experience ladies and gentlemen, is just...well...there are no words to describe it. NONE!!!!