Looking for the maker of Multiplex, I stumbled on this page:
hiromsx.blog62.fc2.com/blog-entry-28.html
You can see by the second picture a bunch of MSX games, specially some turbo-R games I never heard of!
I could see on that picture:
* Hit and Away DX (MSX2)
* South Town's Hero' Turbo (turbo-R)
* A baseball game (couldn't read name) (turbo-R)
* Flowers (1993-1995) (turbo-R)
* innocent wish ~destiny2~ (turbo-R)
* another game (below 'innocent wish') (MSX2)
* Window Club (turbo-R)
* Puzzle9.64 (MSX2)
And on third image, you have a big list of games... http://blog-imgs-27.fc2.com/h/i/r/hiromsx/9563.jpg
Another one: "Dark Castle"... I'm sure there's more on that list!
And there's even "Takeru Press #2" here: http://hiromsx.blog62.fc2.com/blog-entry-29.html and
"Takeru Press #3" here: http://hiromsx.blog62.fc2.com/blog-entry-30.html with more unknown stuff!
Doesnt anyone ever heard of those games? None exists on gen-msx database...