Freeway for the Atari 2600.
I know, we already have this... it's called jaywalking
In all seriousness, there would be the odd video game that would make a fantastic rendition in real life. Unfortunately, many video games do things that would be out of the bounds of reality making it impossible to do or really expensive to make.
Fun to do, easy and a good game show idea: Pressure Cooker (Atari 2600)
Funny to watch but would wear out in a hurry: Fast Food (Atari 2600)
Funny but would need minor modifications: Battle Chess
Impossible but funny if it was:
Elf Bowling came to mind... that would be funny and possible if someone wants to be struck by a giant bowling ball