Editing Jet Set Willy (section)

==Gameplay==
[[Image:JetSetWilly-ColdStore.png|thumb|left|Miner Willy in the Cold Store (ZX Spectrum)]]

''Jet Set Willy'' is a [[flip-screen]] platform game in which the player moves the protagonist, Willy, from room to room in his mansion collecting objects. Unlike the screen-by-screen style of its predecessor, the player can explore the mansion at will. Willy is controlled using only left, right and jump. He can climb stairs by walking into them (jumping through them to avoid them) and climb swinging ropes by pushing left or right depending on what direction the rope is swinging. The play area itself consists of 60 playable screens making up the mansion and its grounds and contains hazards (static killer objects), guardians (killer monsters which move along predetermined paths), various platforms and collectable objects. The collectable items glow to distinguish them from other objects in the room.

Willy loses a [[Life (gaming)|life]] if he touches a hazard, guardian or falls too far. He is returned to the point at which he entered the room, which may lead to a game-ending situation where Willy repeatedly falls from a height or unavoidably collides with a guardian, losing all lives in succession.

One of the more bizarrely named rooms in the game is ''We Must Perform a Quirkafleeg''.<ref name="russandem">We must perform a quirkafleeg — Game meets comic. ({{cite web | url = http://www.russandem.co.uk/quirk/ | title = Fat Freddy's Cat #5 — The Quirkafleeg | access-date = 2006-09-07 | last = Juckes | first = Russ}})</ref> On some versions it is misspelt ''We Must {{notatypo|Pef|orm}} a Quirkafleeg''. The pre-release name for the screen was ''The Gaping Pit''.<ref>{{cite magazine|date=April 1984|title=Crash Magazine|magazine=Jetset Willy Preview|issue=3|pages=24–25|quote=The biggest gaping pit you've ever had to swing across.}}</ref> This is a reference to the comic strip ''[[Fat Freddy's Cat]]'', a spin-off from the ''[[Fabulous Furry Freak Brothers]]''; in the original comic, the quirkafleeg was an obscure ritual in a foreign country, required to be performed upon the sight of dead furry animals.<ref name="russandem"/>

===Music===
Music on the Spectrum version is Beethoven's [[Moonlight Sonata]] for the menu, and Grieg's "[[In the Hall of the Mountain King]]" during the game itself. Early versions used "[[If I Were a Rich Man (song)|If I Were a Rich Man]]" as the in-game music, but it was not licensed, and the publishers of the song wanted £36,000 for its use.<ref>{{cite magazine |last1=Carroll |first1=Martyn |title=The Making of Jet Set Willy|magazine=Retro Gamer |issue=150 |pages=74–77 |publisher=Imagine Publishing}}</ref>

Music on the C64 version is Moonlight Sonata on  the title screen, and [[Inventions and Sinfonias (Bach)|J.S. Bach - Inventions # 1]] during gameplay. Some rooms play Mozart's [[Rondo alla Turca]].

Music for the Atari 8-bit computer version was composed by [[Rob Hubbard]].

===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>