Resource centre for ZX Spectrum games
using Manic Miner and Jet Set Willy game engines
II. Jet Set Willy (JSW48)
B. Advanced modifications of the original Jet Set Willy
4. Jet Set 40-40
Authors: Andy Ford, Daniel Gromann and Ian Rushforth
Publisher: JSWMM.co.uk Team
Year: 2018
Language: English
Jet Set 40-40 is a remix of JSW featuring 40 rooms, each containing one item. The player must collect four complete sets of items. Once the final item of one set is collected, the items for the next set will appear. The game becomes progressively more difficult with each new set, as an increasing number of guardians obstruct Willy’s progress through his mansion and its surroundings.
Most of the rooms preserve their general layout from the original JSW. There are some exceptions, such as the diptych "East Attic" - "West Attic". The majority of the sprites in the game are Matthew Smith's classics from the original JSW, although several sprites from other, later games are also used. The game features six in-game tunes, a custom font, and a redesigned title screen. It includes a number of features that go beyond the standard JSW48 game engine, such as multiple sets of items to collect, an increasing number of guardians as the game progresses, and the in-game tune and the colour of arrows set individually in each room.
The player is offered a choice of rooms in which they can start the game. An option of playing without some of the most extreme challenges can also be chosen.
The game was gamma-released in January 2018.
Number of edited rooms: 41
Number of rooms accessible without cheating: 40
Number of rooms which need to be visited to complete the game: 40
Number of items to collect: 160 (4x40)
Bugfix needed after original release? NO
Spare lives at the start: 7
Completable without loss of life? YES
Starting time: 9:00 am
Best documented completion time with no loss of life:
When played on the maximum difficulty level: 11:46 am
When played without some of the extreme challenges: 11:40 am
Download links
The game's home page on JetSet Willy & Manic Miner Community |
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ZIP file of the official release |
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Game file in TAP and TZX formats |
The game's page on Spectrum Computing |
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The game's map on Speccy Screenshot Maps |
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RZX walkthroughs of the game showing the best documented completion time in both game modes |
Videos
A video on the JSW Central YouTube channel showcasing a completion of the game starting in the Master Bedroom and played on the maximum difficulty level
Download the JSW Central video in its original Full HD quality or in an AI-upscaled 4K version |
A video on the JSW Central YouTube channel showcasing a completion of the game starting in the Master Bedroom and played without some of the extreme challenges
Download the JSW Central video in its original Full HD quality or in an AI-upscaled 4K version |
Screenshot gallery |





A complete screenshot gallery will be presented here in the future. It will depict the rooms as seen when the player is collecting the fourth set of items, playing in the 'Maximum difficulty' mode. Hence the pictures will show all the guardians that appear in the game at that stage.

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