Editing Jet Set Willy (section)

===Bugs===
Upon release, the game could not be completed due to several bugs. Although four completely unrelated issues, they became known collectively as "The Attic Bug".<ref name="skoolkit">{{cite web|url=http://skoolkit.ca/disassemblies/jet_set_willy/reference/bugs.html#theAtticBug|title=JetSet Willy bugs|last=Dymond|first=Richard|date=2022-11-22|work=Skoolkit|access-date=18 December 2022}}</ref> After entering ''The Attic'' screen, various rooms would undergo [[Data corruption|corruption]] for all subsequent playthroughs, including all monsters disappearing from ''The Chapel'' screen, and other screens triggering a game over. This was caused by an error in the path of an arrow in ''The Attic'', resulting in the sprite traveling past the end of the Spectrum's video memory and overwriting crucial game data. Initially [[Software Projects]] attempted to pass this bug off as an intentional feature to make the game more difficult,<ref name=yr04_60 /> claiming that the rooms in question were filled with poison gas, but they later rescinded this claim and issued a set of [[PEEK and POKE|POKEs]] to correct the flaws.<ref>{{cite journal | date=July 1984 | title = Jet Set Willy Solved! | journal=[[Personal Computer Games]] | issue=8 | page=21 | url=https://archive.org/stream/personalcomputergames-magazine-08/PersonalComputerGames_08#page/n22/mode/1up | access-date=2014-04-19}}</ref><ref>{{cite journal | date=August 1984 | title=Attic Attacked! | journal=[[Your Spectrum]] | issue=6 | page=5 | url=http://www.users.globalnet.co.uk/~jg27paw4/yr06/yr06_05.htm#JSW | access-date=2014-04-19}}</ref>

Despite these bugs, Ross Holman and Cameron Else won the competition that Software Projects had set for completion of ''Jet Set Willy'' and provided Software Projects with a set of bug fixes.<ref name="yr04_60" /> Software Projects then hired Cameron Else to port both ''[[Manic Miner]]'' and ''Jet Set Willy'' to the [[MSX]].<ref name="cam_msx">{{cite web|url=https://www.generation-msx.nl/software/software-projects/jet-set-willy/2765/|title=Generation MSX|access-date=18 December 2022}}</ref>