Paul Allen of Traf-O-Data created 4K BASIC for the Intel 8080 processor using an emulator running on a PDP-10. He brought a punchtape (punched on the plane ride to Albuquerque) to a prearranged meeting with Ed Roberts and Bill Yates of MITS. After booting and loading it on the Altair 8800, Paul typed in "Print 2+2" and the Altair responded "4"; thus verifying Traf-O-Data's code nor punchtape was not totally borked and had loaded correctly. He then proceeded to type in BASIC code for the game Lunar Lander for a more impressive demonstration that ran perfectly. MITS purchased a license for what would be named, Alair BASIC. Traf-O-Data became Micro-Soft shortly thereafter and eventually was re-named Microsoft (Bill Gates wrote 17 bytes of the 4K BASIC). So, Lunar Lander, 1st Alair BASIC game.
A re-enactment of sorts:
About Lunar Lander
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