Well Burness's moonlander is around (as it Jack): Source: http://www.brouhaha.com/~eric/retrocomputing/dec/gt40/software/moonlander/g… <-- original http://www.brouhaha.com/~eric/retrocomputing/dec/gt40/software/moonlander/r… <-- RT11 port Here is a cut/pasted from a message from Jack to some of us alumni last winter: from: Jack Burness date: Mon, Feb 4, 2013 at 11:10 AM subject: Non-Biz: Humor(?) 40th Anniversary of the GT40 Moonlander - And You Can Play It Now...... to: JacksAlumniList For those that remember Moonlander, the final version was created 40 years ago on February 25, 1973. But thanks to Rick Naro you can play it right now. On your iPad (sorry, it doesn t work on an iPhone). It is amazingly like the original. Just download the app Moonlander Classic by Paradigm Systems from the appstore. It s free. And amidst the credits and faqs there are interesting tidbits of information, including the original source code