Major supporter of this thinking, and did several sketches in this direction a few years ago: http://www.illucia.com/

Made of: 1) a suite of interconnectable videogames & apps and 2) physical patchbays to connect them

Came from thinking about software like modules in a modular synth. Playgrounds of interconnectable control structures. Was patching games into samplers, slaving text editors to drum machines, etc.

related writeups: http://www.illucia.com/faq/ another from 2010 or so when I was just starting coding (so a lot of it feels silly now.. but still some related nuggets): http://www.paperkettle.com/codebending/