It'll be like that episode of The Twilight Zone with the guy's glasses when you find a CD with Crysis on it but only have a Voodoo 5 installed.
I had similar situations in my youth, I have fond memories of hacking games up so they'd work without the 3D models. You haven't lived until you've played Mafia only being able to see the player's shadow beating up the target's shadow with a bat.
That would be wild but very funny. They are rare now but in the bizarro land, Nvidia never exists!