Quake: I had access to a VR lab, and they had a huge screen that worked with those polarising lenses to create 3D (like the 3D TVs did about 15 years later). My mate fired it up so I could try it, and everything was fine until the first dog jumped at me and I fell backwards off my chair.
Unreal: The visuals in that game were truly breath-taking if you had a Voodoo. I remember just seeing the intro screen where the screen rotates around a building, realising it was being rendered on the fly, and blown away by it. We used to play this of a Friday afternoon in the office, and the bosses knew, but it was really good fun.
WoW - Wrath of the Lich King: When we finally managed to defeat the Lich King. The guild I was with had been trying to finish the raid for a while, but we'd end up wiping at certain points, and it took us a while. One night we decided to do it as a completely spontaneous raid (as opposed to our "raid nights"), got on TS, and we had that perfect session, and took him down without wiping once. I also had a "blue" (tech support) coach me through an instance while he waited to deal with an open support ticket. When we reached the end, I found out he'd been following us through the instance, and briefly appeared to give us a cheer.
Outrun, Afterburner, Space Harrier et al: Something that still hasn't been done at home for the mass market almost 40 years later. I remember being on a cross channel ferry one day, and it was a bit choppy, and it added so much to the Outrun and Afterburner cabinet
. Honourable mention to WEC Le Mans and Konami for creating a cabinet that spun around and made you dizzy. There was also the Afterburner gyroscope thing that was absolutely amazing to play, and flying upside down with coins raining from your pockets is simply awesome.
Far Cry 6: I loved this game. What made it for me was the little finishing touches to the character, and little things she'd (I play female) do during down time. If the radio in the car is playing she sings along, she'll also make little comments regarding what's going on around her, and some interactions are really nicely done. It's also absolutely beautiful with maxed out settings.
Frontier - Elite II: I bought this on day one with a mate, and while he went absolutely batshit insane over it, I was like "meh!" as I'd not liked Elite. I then discovered a the cargo eject bug (if you bought rubbish, and then clicked under the eject button it freed up cargo space but kept the rubbish, rinse and repeat to create a TARDIS). At one point I had an Eagle with 50 passenger cabins and a particle accelerator which was actually bigger than the ship and made it impossible to see anything. Regardless of bugs and exploits, the sheer size of it made it feel formidable.
Elite Dangerous: I think the ED players are some of the nicest in gaming. There are various groups like the Fuel Rats who spend their time flying out to rescue stranded players. You might have had a fight in game with someone, and they'll occasionally call you out on forums and say how much they enjoyed the battle. There's also a few in jokes such as getting a free ship if you go to Hutton Orbital (it takes almost 2 hours at full tilt to reach it), and it tends to be a rite of passage along with the Colonia Highway and visiting Sag A*. The community also has a very big heart and when a terminally ill player said she wanted to visit a system which shared her player ID, a whole logistics operation was arranged, and there was a large community effort to escort her there safely (it took a few weeks to get there). There's also some of the amazing sights you'll see.