In this video, Eskil Steenberg presents the tool he wrote for his game, Love. The tool gives an instant feedback and shows the results of modifications just as they go, while any concept of loading, saving, exporting, synchronizing or even file in general is gone, abstracted away.
The Toolsmiths, a blog focused on content creation tools for video games, mentioned this enlightening talk by Bret Victor. The first part has some thought provoking ideas for programmers and anyone in a creation process in general. This will certainly strike a chord or two if you’re in the demoscene or in the video game industry.