"Need something to read? Enjoy these selections from among the most frequently bookmarked articles on Instapaper."

Jolly good interview with Tim Sweeney, with lots on ZZT (hurrah!), and, I think most interestingly lots of on building games around editors and tools - from ZZT through Unreal to the present day. I like his acknowledgments of his shortcomings as a progammer - but perhaps also his shrewdness as a manager.