You can't think of anything crazy with Google: every combination of Fiat 850 with any subject results in new craziness. Searched today for "Fiat 850 + Game" and yes, Wreckfest showed up. It is a PC-Racing game where you have to drive all types of cars and set-ups that you can think of on an 8-shaped circuit.

It features a number of Fiat 850s, Berlina's and Coupe's:

Fiat 850 Wreckfest

Fiat 850 Coupe Wreckfest

More images when you search Google for Fiat 850 and Wreckfest