Not an idea I intend to do anything about at the moment, but thought I would share the thought...
I was looking into how laser light shows work as part of another project - i.e. writing words and images on a wall.
Some of the FAQs on the topic referred to the need to vectorise images so they could be translated into mirror movements, etc.
It occurred to me that vector based video games might be able to output to such a setup instead of the back of a monitor screen.
You could play battle zone on the side of a building - or asteroids on the bottom of a cloud...