Or is there an open source version?

I'm thinking along the lines of bill viola

I'm sure we can do a lot of this stuff without any technology or just using simpler stuff on software, but you know: making a 3D immersive environment with real materials can be costly, messy, etc.

I guess if I wanted to do something like that [a 3d funhouse!] would I have to get to learn about projects and stuff?