Not an unreleased game entry, but an early demo/prototype of this Commodore 64 graphic adventure game that was released by Ordilogic/Lankhor back in 1989.
This was found on a set of disks by Csaba Virag, and was likely sent out to companies at the time to try and get publisher interest.
It shows a set of screens from the game with introduction text in French to pitch the title.
Thankfully in this case, the game was finished and released, so this is just an interesting curiosity to see. With thanks to Csaba Virag for digging out.