The setting was inspired by Robert A. Heinlein’s Time Enough for Love, wherein galactic colonization is in the style of the American Old West: A few pioneers with drive and primitive tools. The M.U.L.E. itself is based on the idea of the genetically modified animal in Heinlein’s novel and given the appearance of a Star Wars Imperial Walker. Another Heinlein novel, The Moon Is a Harsh Mistress, provided the decision to not have any government or external authority. In the game’s original designs, land was sold by auction, but this caused a feedback loop in which the wealthiest player had the most land and thus made the most money; thus, the developers created the “land authority” that gives each player a free plot of land each turn.
Brilliant early video game, especially for pulling in players who normally preferred fast action. The simplified economic simulator was surprisingly fun, and little touches of humor were everywhere. RIP Dani, you gaming genius.
For anyone curious, this game (like many) is available to play for free in browser at any # of sites. This might get you started: https://www.google.com/search?q=M.U.L.E.+game+internet+archive
I know there were also some good unofficial sequels, which I still haven’t checked out. :S