Jet Set Willie

I will let you know. 🙂 The problem has happened only when I have needed to have some time to think while writing a longer message.

For any other games, I can think just few what are probably 🤔 written from the scratch, being updated "arcade versions" or clones with somewhat similar type graphics and game logic.
There may be just one "arcade version" game, instead of few or several. These will include Commodore 64 "arcade versions" of Bombjack and Ghosts ´n´ Goblins. On Colecovision there is such version of Donkey Kong and Pac-man. There might be more such "arcade" games on Colecovision now, I haven´t readed the news for any machines for years now, expect few. Some Commodore 64 games have got a homebrew sequel, like Frantic Freddie.
For MSX there are few Nemesis/Gradius clones or updates. I think one game was Nemesis/Gradius engine with arcade graphics update.
On Atari 2600 there are games what have many altered graphics versions, like Pac-Man. Please check Atariage, you will find other 2600 games, too, with altered graphics.

If Willy has just one life left, when the toilet run sequence starts, will he survive to the toilet then?

Thank you everybody! 🙂 
I will just have to define (Master bedroom) room and Willy´s (bed) X-position to the toilet room so the game logic will think Willy is touching the bed and then start to run to the toilet? When I define bed X-position near the edge of the toilet room, it will look like Willy is running to the toilet immediately when he enters the toilet room, having collected all the items first, of course.
What if Maria is not guarding the bed but is located elsewhere? I suppose it does not matter as she´s just an deadly obstacle?

Congratulations for such a finding! 😃🙂 
Boulder Dash on Commodore 64 perhaps? There are hundreds (at least) of homemade versions available on internet.
I haven´t checked though when the last ones have been made.

Thanks, I am trying to use "Remember me" to see if it helps.

Thanks. I don´t know, how far people will get in my game anyway 🙄 even all of them are probably using infinite lives "cheat". 😉

Thank you, both of you. 🙂 I am considering to make a single room end-run, as it suits to my next game. I will have to give a look at Hex someday. 🙂
Does the guardians disappear when the end-run is triggered? I haven´t watched any videos to actually see what happens, as I have wanted to finish JSW someday, without cheating, but it doesn´t sound realistic for my skills😅so maybe I can ask about it now. 🙂
 

Congratulations for such a finding! 😃🙂 
Boulder Dash on Commodore 64 perhaps? There are hundreds (at least) of homemade versions available on internet.
I haven´t checked though when the last ones have been made.

JetSetWilly
 start game                  game mode 0 -                                                 -
 collect last object       game mode 1 - maria removed                        - object number defined by a specific byte - not by actual objects
 jump on bed               game mode 2 - forced walk to toilet                - room + x position defined - reach the x position to trigger
 reached toilet             game mode 3 - animated head/toilet graphic - room + x position defined - reach the x position to trigger 

Best guess , the check for between mode 2 and 3 does not realise you've reached the toilet.
Try it again, enable 'writetyper' so you can jump a room perhaps. Does Bridge still exist ? Teleport there when he's stuck in the bathroom, he ought to run right into Off Licence and either get hit by a vertical guardian or reach the wall.
Is Bathroom still room ID #21h / 33 ? If not...
At #9588h /  38280 , change the byte there to match the new Bathroom ID number.
The code for this is really simple, this is not executed unless 'mode2' is in operation , aka he is running rightwards after landing on the bed:

9584     LD A,($8420)     Get the room number 9587     CP $21     Is it the Bathroom ? 9589     RET NZ   Exit if not in Bathroom, we're done here 958A     LD A,($85D3)     Get Willy's co-ordinate 958D     CP $BC     Is he at the far right (minus the wall) yet ? 958F     RET NZ     Exit if not
Beyond this the sprite would change to the Willy/Toilet one as he's reached it.
My (as above) suspicion is Bathroom is not the right ID number as shown in #9588
 

The User Defined Graphics can be Copied by using Clipboard to copy the entire room. Of course you can then copy just one room per time.
But I don´t remember if JSWED 48K game graphics will partly become garbage if you try to Copy them to 128 or 64 versions? Or am I just thinking 48K upgrading to 128/64?

Yep! 🙂 

You can copy an entire room, including sprites and guardians from that room, by selecting Clipboard > Copy. Then select the desired room from the room list and select Clipboard > Paste. If your room is in another game, then load that game first and then select Clipboard > Paste. You can then clear everything what is not needed there.
You can also export and import just the sprites by going to the sprites list (above "Room") and Right Click > Export and selecting the sprites you want using "From > To". Then load the game you are making and Import the sprites there. I think there may have been some bug in Export/Import, not sure though as I haven´t needed that.

In JSWED64 you can tick (separately for all the rooms) if you want to land safely from any height.
About that Hex, I think I had found it when I was making my game, but I don´t remember it anymore. While waiting an exact answer from somebody else, please take a look at these links. Just remember those addresses are for 48K games. I don´t know how well they will work on JSWED 128 and 64 versions, I tried just one thing and it didn´t work even it worked on JSWED48. I haven´t tried again yet, so I don´t know.
 
https://skoolkit.ca/disassemblies/jet_set_willy/hex/
 
Here are some of airborne/falling related routines.
 
https://skoolkit.ca/disassemblies/jet_set_willy/hex/asm/8DD3.html
https://skoolkit.ca/disassemblies/jet_set_willy/hex/asm/8ED4.html
https://skoolkit.ca/disassemblies/jet_set_willy/hex/asm/90B6.html
https://skoolkit.ca/disassemblies/jet_set_willy/hex/asm/85D1.html
https://skoolkit.ca/disassemblies/jet_set_willy/hex/asm/8B07.html

Set the third unit to 2/0, ninth to 0/2 and tenth to 2/0 and it's working pretty well. Thanks.

Yes, it´s a card sized cartridge, thus a card. 🙂 Also, you can´t use it as a normal cartridge on MSX, you need a Beecard adapter, too.
The Beecard JSW I downloaded long time ago had lots of lives, I don´t know if japanese publisher had modified it to turn the difficulty level more acceptable? Or perhaps somebody had modified the internet file?

The last one I can understand as a part of a loader program, to select what to load. 🙂 

About the large square what turns blue when Willy walks to it, please try to change Ink and Paper, in example if Ink is 6 Ink is 2 and Paper is 0, change them to Ink 0 and Paper 6 Paper 2. Then you can decide which one is better for your purposes.
About the latter problem, it looks like what Spider said, you have used the same Ink/Paper colour combination for cells 9 and A, both cells being Ink dark red/Paper black (or vice versa). If that´s the case, please try the following.
cell 9 Ink 6 Ink 2 / Paper 0
cell A Ink 0 / Paper 6 Paper 2  (Sorry...🫣)
The other cell will turn to dark red square when Willy touches it, but at least you can get both tiles visible. 🙂 
Though, sometimes the engine lets you use the same Ink/Paper combinations for more than one cell. For this, you just have to try that in every room, if you can use certain colour combinations more than once.
 
 

Thanks, I am trying to use "Remember me" to see if it helps.

Yes, that´s one of those ways I couldn´t thought of at all... 😶

I can´t help it, the Sinclair Research is one to blame. Or alcohol.
😄

Thank you for your feedback. 🙂 
Perhaps I should add a warning to my game´s front inlay, "Warning! One game player has reported illness when he played while being drunk. Please stop playing immediately if are drunk and feel any symptoms." 🤭
The backgrounds of Willy games seem to be "empty", not all of them, but some at least, the platforms and walls and items being the only visible things among the guardians, everything else being usually just empty black. I wanted to bring the missing "3D" there, all the missing things, like the mountains, the clouds, all the scenery "behind" the "nearest" platforms. Also, in some rooms you can walk "further" away from the tv screen and back, too.
 

The first thing what I wanted to "Hex", was to move the addresses of few sprites, the way what I had done in the game over sequence in What a Wonderful World of Willie, perhaps touching the toilet sequence a bit, too.
Here is another problem with the JSWED 64.
While defining sprites to Options > Sprites, at least half of the time there will appear one "garbage sprite", usually arriving to the leftmost sprite and pushes other sprites to the right. Those eight sprites will work normally though, even pushed one sprite to the right. Sometimes there is another just after the eight sprite, making it impossible to use the last eight sprites. If I want to define more than just the first eight, one or more garbage sprites will cause that the second row of available sprites will show as empty.
When I try to add a guardian using the sprites from Options > Sprites, in some rooms there is nothing to choose there (Add/Edit a guardian > choose Sprite is empty) even I have just defined those sprites. I can´t add those sprites then, as the sprites list will show just blank space there. There should be two rows of those "sprites-per-room" sprites, but some rooms will show just one row. I have also seen both rows as empty, so no way to use that room´s own sprites there.
I think this problem can be solved by "Hexing", but how?
By the way, could you moderators please bring more "idle time" before JSWMM "kicks me out". It is annoying to write messages to only notice that when I am pressing "Submit reply" button, my message disappears because JSWMM has logged me out, as it thinks I am just an "idle person", even I am writing a message. 😟
 

Thanks. I don´t know, how far people will get in my game anyway 🙄 even all of them are probably using infinite lives "cheat". 😉