> Integrated hardware from this era, like integral Intel or nVidia,
> don't have OpenGL 2.0.

Oldest integrated/mobile GPUs with OpenGL 2.0+ support under Linux:

- 2003: ATI Radeon M10 (Mobility Radeon 9600)
- 2003/2004: Nvidia NV3xM/NV4xM (GeForce FX Go 5xx0 / GeForce Go 6xx0)
- 2005: Intel Mobile 915 (GMA 900)

"2012 or so" still seems way off.

> remember WZ2100 is a 1999 game.

If one still has hardware/OS from that era, the 1999 release surely still runs fine on it.