pixel shader 2 and Doom3 are old technologies. Why should that not run at your pc? Doom3 and Quake4 did use mainly 256 pixel images. This is low resolution.

I really do not understand your whining and supporting of old systems.

Besides that the "Lived" project does not have to care for old systems and sales numbers because it will be free, non-commercial, as far as I know.

But ok: Start your top game and program it around the fixed function pipeline of an old GeForce2MX. You will not sell it for sure.

This discussion is non-sense. Use modern technology with fall-backs and the world is open for you. All the other attempts are fun and hobby but useless in terms of commercial projects.