Resource centre for ZX Spectrum games
using Manic Miner and Jet Set Willy game engines
II. Jet Set Willy (JSW48)
A. New games using Matthew Smith's original Jet Set Willy game engine for the 48K Spectrum and its modifications
7. Jet Set Willy: The Deadly Mission
Author: Adam Britton
Year: 1985
Language: English
Jet Set Willy: The Deadly Mission is a 1985 game by Adam Britton. It was created using Paul Rhodes' JetSet Editor. In the mid-1990s, the game was recovered from the original tape and transferred to emulator format by Richard Hallas. It was released in January/February 1996 as part of the snapshot pack in Issue 4 of the Emulate! online magazine.
The game introduced and named one of the classic quirky features of the JSW game engine: the Innocent-Looking Block (ILB), which allows the player to move through a solid barrier located beneath Willy (or even, as in this case, reach the room below) by jumping through an Earth cell at a particular angle. See the rooms "The Innocent Looking Block!" (53) and "Nuclear Storage" (54).
The in-game music is "Wedding Day at Troldhaugen Op.65 No.6" by Edvard Grieg, coded by Richard Hallas.
The SNA file of the game included in the Emulate! magazine was perfectly completable without losing a single life. However, a modified version of the game started doing rounds on the internet, with a critical bug that made it incompletable. It must have been created just two days after the file that was included in the Emulate! magazine. The latter has a date stamp of 21 September 1995, while the earliest known Z80 snapshot which features the bug has a date stamp of 23 September 1995 (it is currently hosted, for example, on World of Spectrum and Spectrum Computing). The bug was discussed by Andrew Broad on his website.
Jet Set Willy: The Deadly Mission in TAP and TZX format, converted to tape format from the original, bug-free SNA snapshot from the Emulate! online magazine, is available for download below. Adam Britton kindly expressed his approval of this version in March 2022 (please see the Readme file for details).
Number of edited rooms: 64
Number of rooms accessible without cheating: 64
Number of rooms which need to be visited to complete the game: 64
("Top Of A Pit" [21] can be visited for a split second only, during a jump at the top of "The Underground Cavern" [23] which is necessary to reach the uppermost level of the latter room.)
Number of items to collect: 251
Bugfix needed after original release? NO
(Even though the general perception of the community was that a bugfix was needed, due to the buggy files hosted on major ZX Spectrum sites.)
Spare lives at the start: 7
Completable without loss of life? YES
Starting time: 7:00 am
Best documented completion time with no loss of life: 8:27 am
Download links
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Game file of the original bug-free version of the game in TAP and TZX formats |
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Bug-free version of the game in TAP and TZX formats, with a Readme and the original SNA file from the Emulate! magazine |
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The game's page on WoS |
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The game's page on Spectrum Computing |
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The game's map on Speccy Screenshot Maps |
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RZX recording of the game showing the best documented completion time without any loss of life |
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RZX walkthrough of the game showing a completion time inferior to the best documented performance and using a non-original, POKEd file |
Video
A walkthrough of the game on the JSW Central YouTube channel
Screenshot gallery |
