Games that aged well

[Everis]

The first Unreal game holds up well, in graphics and gameplay alike.

[Vespo27]

Civilization II.

[Gemini73]

I recently started up Fire Ant on the C Plus 4. Said computer was the first system I ever owned and I loved it, even though it was a domed system. What surprised me about Fire Ant was just how playable and indeed enjoyable this game still is some 30+ years later. Remarkable!

I've also a soft spot for old school, first person RPGs. The likes of Ishar, Might & Magic, Wizardry etc hold a charm for me that I feel more modern RPGs lack. Wizards & Warriors (2000) for PC has currently been doing the rounds and I'm pleased to report it still holds up surprisingly well.

[crystalizer32]

star wars battlefront 2 (ps2) (2005)
half-life 1 and 2 (pc) (1998 2004)
the spyro trilogy (ps1) (1998,1999,2000)
quake 2 (pc) (1997)
return to castle wolfenstein (pc) (2001)
duke nukem 3d (pc) (1996)
link to the past (snes) (1991)

those are some of the ones i can think of off the top of my head

[Vfbmax]

Custom Robo (GameCube version)

Chrono Trigger (SNES but they did a make for the PS1 back in the day)

Super Mario world (SNES)

The first three Sly Copper games (PS2, the graphics on one are horrendous but the game play is still fun)

Spyro the Dragon (PS1)

Half Life series (PC)

Postal 2 (PC)

Psychonauts (PC)

Stars Wars Battlefront 2 (PS2, the OG)

Star Wars Rebel Assault 2 The Hidden Empire (PS1, its a mixture of video footage and low poly models but the fun comes from the random death scenes for both the enemy and you)

[The_Bungler]

Wing Commander 3 / 4. Excellent games and still a lot of fun.
"You pathetic descendant of monkeys!"

[Sirgeorge]

The Marble Blast games aged very well. Recently took a look back at them for some research. Still lovely.

[Black Lotus]

Legacy of Kain
Tetris
Pac-Man
Marvel vs Capcom 2
Parasite Eve
Street Fighter 2
Neverwinter Night

[Temuldjin]

Heroes Might and Magic 3 have also aged decently, sure the grafics are a little lacking but the gameplay is still suberb and for many the game is carries on the shoulders of nostalgia anyway
UT 2004 have also aged quite well (on ultra settings) the multiplayer online is still going strong and the single player is really good.

Both are PC games.

[Hyperweasle]

It... was released on the Wii U. I know, I have the version with the game and the digital version of Hyrule Historia preloaded on it.

I know that, but I mean that the game could have been originally released on the WII U without any graphic enhancements and I think it still would have been considered a pretty looking game

[Raggsvettma]

Resident Evil 4.
DKC2.
Banjo-Kazooie.

[Temuldjin]

games that aged well on the n64.

Diddy Kong Racing
Banjo Kazooie
Banjo Tooie
Conkers Bad Fur day
Lylat Wars (starfox 64)
Mario Party 1,2 and 3

the n64 game that aged the worst:

Goldeneye, sadly

[HunterEste]

Old games that I can still pick up and have a blast playing today:

NES ERA:
Legend of Zelda
Super Mario Bros. 3
Crystalis
Mega Man 2
Star Tropics 1 & 2
Tetris

Gameboy Era:
Zelda: Link's Awakening
Super Mario Land 2 : The Six Golden Coins
Pokemon Blue/Red

SNES Era:
Zelda: Link to the Past
Super Mario World
Super Metroid

[Jokerthefoolio]

I would say Wind waker and just about every good 8 bit and 16 bit game

[Tonic]

Final Fantasy Tactics has aged pretty well. Everything still flows smoothly, engages the mind. Heck, even the UI feels fresh.