Posted Sun Mar 18, 2018 6:59 PM
It's entirely possible that the original BASIC game served as an inspiration for games that were later (re)-implemented in machine language. Intellectual property laws as we know them today did not exist at the time, so I'm sure there was a lot of cross-pollination of ideas.
I also wouldn't be surprised if BASIC was used for what we would now call "rapid prototyping." To cite one example, I remember the Mattel handheld game engineers discussing their design process as a combination of "simulation coding" and "production coding." The "simulation coding" stage was done on (I think) an Apple ][ and consisted of refining and simplifying the game design until it was feasible to implement on the tiny chips that would be used in the final product; "production coding" would then involve translating that design to the target hardware.