I was really a fan of Riven for a while, it's the second game after MYST and even by todays standards the graphics are truly beautiful. The technology was better in the later versions, but things didn't look as real as they did in Riven.
i play Need For Speed..
i have play all version of Need For Speed..
and i like to play The Sims 2..Counter Strike..Stronghold Crusader..
and many more..
It's either between Quakeworld and Starcraft for me.
Others to consider:
Call of duty 4
Company of Heroes
Dungeon Keeper
Quake III Arena
Team Fortress 2
Warcraft III
World of Warcraft
Zdaemon
Console while we're at it:
The Legend of Zelda: Ocarina of Time (N64)
Mario Kart Wii (Wii)
Goldeneye 64 (N64)
Perfect Dark (N64)
Mortal Kombat: Deadly Alliance (GC/PS2/XB)
The Legend of Zelda: Phantom Hourglass (NDS)
Orcs & Elves (NDS/Mobile)
Pokemon Red/Blue/Yellow (Gameboy)
Super Mario 64 (N64)
* Gone braindead at work here, can't think of much more right now *
PC Games:
Warcraft 3: Defender of The Ancients Map
Console Games:
Final Fantasy 4 and 6
Legend of Zelda Series
Harvestmoon Series
Lufia Series
Chronotrigger
Secret of Mana
Super Mario World and Super Mario RPG
Earthbound!!
Rockman X
I love especially those old classics. The newer games can't even compare to them anymore in my opinion...