Oldest game you still play

I thought this would be a cool thread...

My list of older games: Olderest, to oldest
Need for speed:
High Stakes
HP 3
HP 2
MW 2005
Carbon
Undercover

Grand theft auto series:
GTA III

Other/unlisted:
Streets of Sim City, Released october 31 1997
Sim City, the one that came bundled with streets of..
18 wheels of steel Across America
18 WoS Pedal to the Metal
18 WoS Haulin'
18 WoS Convoy

Those are the old games I still play... Excited to see what everyone else plays

 

Depends, if every now and then, it´s Formula 1 97.
If actively, it´s rFactor.

 

I have been playing spore since it came out

 

RollerCoaster Tycoon 3: Platinum
Chris Sawyer's Locomotion
Postal 2
Railroad Tycoon 3
Sim City 4 Rush Hour
You know good games.

 

SimCity on SNES I still play occasionally.

 

3D pinball for Windows - Space Cadet

 

One of the oldest games I still play probably has to be Team Fortress 2.
Even though its only 2007, I don't actually play any older games anymore

 

Beamng Lol

I used to play Race07 pretty often.