I didn't know the 83+ game was a port of a DOS game, though. I was sure it was the original.
It was based on "Block-man 1" by Soleau Software
. Levels 1-10 of Block Dude are pretty much identical to levels A-J of Block-man (levels 11+ are new).
Very interesting, Goplat!
I was just thinking, in order to keep things original/different, maybe I will include all of the "Block Man" levels in the Lua version, and keep the "Block Dude" levels in the C version!