I decode the images from the disks (scan de DSK file searching for a image header and then decompress it)
Probably those graphics are extra content accesible by waiting in the ending, pressing some keys or whatever.
Nah, I haven't seen any code/secret to access ending omake images. There are, however, omake screens when you insert disk 1 and hold B.
Fray's "hidden pictures" demo after the end demo can only be activated by waiting with the Turbo R version. In the msx 2 version it is like ReyVGM says.
Yesterday I decoded the graphics and maps of Illusion City. I found an emoticon drawn in a map:
Also, in some sprite sheets there are "left" and "right" kanjis.
I love such kind of things... hope you share more findings here. MSX still surprising us.
Some of SD Snatcher scripts have unused messages. But most of them don't have any interesting information.
The Syd Garden South script of SD Snatcher contain 2 unused messages. You cannot trigger them from the game, but you can read them if you view disk with a hex editor. First of them saying that there is a hidden stage in Syd Garden, but it's very scary and you shouldn't go there. And second saying that maybe it's not true and stuff members just teasing you...
Those left and right kanji in Illusion City are so unpolished, I'd bet they were just used for devving.
Strip Poker II Plus (Anco) had a message as well. Using an hex editor about 15 years ago I saw a message inside it. IIRC it said something like "So if you think you're good, try to decode this..." followed by a cryptographed message in some plain ASCII text code.
Interesting texts from Strip Poker II Plus:
code
RUBBISH
IF YOU CAN READ THIS TRY TO DECODE THIS:-FLKG VF GFHJKLG FGSDGS DGFS FDG DFGS FGSDAEHCWOHS
And some other interesting game texts:
To see any more you will have to BUY THE GAME !
Hi ! My Name is 1234567. I do hope you enjoy this game of Strip Poker from ANCO SOFTWARE LTD (C) 1988. I wish you luck ... ... You'll need it !!
RUBBISH
SAM
"FLKG VF GFHJKLG FGSDGS DGFS FDG DFGS FGSDAEHCWOHS" from Strip Poker II seems to be a simply letter permutation code. I wonder what does it means...