RetroGaming

Warcraft 2 best Warcraft hands down

Metal Great Solid

American McGee's Alice (2000) on PC

Spyro (series) Playstation 1998-2000

Future Cop LAPD. It's similar to Herzog, but I could figure out how to play it.

Spacewar, DOS, 1985

Heroes of Might and Magic III, PC

Star Control II .

Pokémon Crystal is just shy of your 25 year threshold depending on what month it was released (it came out in 2000 in Japan), so I'll say Pokémon Yellow or Pokémon Gold and Silver. We can sit here and nitpick about which is the best, but Red, Blue, Yellow, Gold, Silver, and Crystal were all amazing.

Star Flight, 1986(?). Huge universe, multiple alien races, reputational, on two 360k floppy disks, and a great story too.

Super Mario Bros 2, NES

Bubble Bobble, Arcade, 1986

Might and Magic III

F19

B-17 (intellivision)

Pitfall

Zork

Myst

Gauntlet (arcade 4 person game)

Wonder Boy: Monster Land, Arcade, 1987

Total Annihilation

missile command, arcade

IK+ (International Karate plus), Amiga, 1987

asteroids, arcade

Street fighter 2 - hyper fighting edition (arcade).

Played this every day after school for years as did a huge portion of my school.

sonic 3 and knuckles, Sega Genesis

Shinobi 3, Sega Genesis

Ultima IV - Quest of the Avatar (C64)

Resident Evil (1996)

UFO (or xcom) - enemy unknown.

Wipeout 2097 (Wipeout XL), PSX, 1996

Unreal Tournament

Quake 2, PC

Diablo (1996?)

Carmageddon 2 - PC

Little Big Adventure 2

Dune 2, PC

Duke Nukem 3D, PC

I’ll propose Age of Empires 1. That one is my childhood pretty much 😄

Half-Life