Author Gregg A. Tavares speaks...
The game was created by Silas Warner originally with me being added to the team about a 1/3 or 1/2 way into the project. Silas was working on the Commodore 64 version and I was assigned the Atari version. As they both ran on a 6502 microprocessor, most of the code was shared but since the Commodore could more easily animate sprites than the Atari system, some animations and sequences are different between the two systems. A good example is the letter "P". On the Atari, I think it is a drawing of a panda at a party. On the Commodore 64 it is people marching in a parade.
That was back in the day when programmers coded entire games by themselves, no artists, no game designers, so about 70-80 percent of the artwork is by me and the rest by Silas.
I have no idea how many copies it sold. I suspect very few. MUSE Software went out of business just a few months after Leaps and Bounds! shipped.