After developing the original versions, Glover moved on to "Jumpman Junior", a cartridge title with only 12 levels. He stated that it wasn't really a sequel to "Jumpman", but more of a "lite" version for Atari and Commodore users who didn't have disk drives. These versions removed the more complex levels and any code needed to run them. Two of its levels (Dumbwaiter and Electroshock Traps) were turned into Sreddal ("Ladders" backwards) and Fire! Fire! on the latter. The C64 version was later ported to the ColecoVision, which used the C64 levels.