Once Upon a Diner: Grandma buys a magic lamp, but Flo doesn't believe in magic. After Grandma slips and drops the lamp near Bernie the Bookworm, he unknowingly drinks from it while wishing that everything will be like the fairy tales that he's currently reading. This causes him, Flo, and Grandma to be transported through five fairy tale worlds based on Arabian Nights, Alice in Wonderland, Jack and the Beanstalk, Cinderella, and the Wizard of Oz, with Grandma appearing in various forms based on the world. Flo must serve food to get enough money to buy what they need to progress to the next world. In the end, she and Bernie are advised to use the lamp that Bernie still had with him to return home. Back in the diner, Grandma claims that they were gone in a second, but secretly hides a broken wand behind her back.
Diner Dash: Once Upon a Diner is abandonware and no longer sold or supported by its publishers. This game was preserved thanks to a community donation - see our missing games page for credits and titles we're still looking for.
https://archive.org/details/diner-dash-once-upon-a-diner
I’ve just noticed there’s been no update, and I looked myself. If this is something usable, maybe someone can fix these up and make it playable. If you’re wondering where, just scroll down in the replies, someone linked an archive link. Someone just needs to incorporate the files for the DLC into the game, if someone can do so, this would be considered playable
https://archive.org/details/diner-dash-once-upon-a-diner
https://mega.nz/file/IphXFBAT#BmCGeBPDxiUy1eUw1kv3glU_EJaYHKJ0_qgjuMp1NoY
(can only access 1 restaurant, Munchkin Lunchkin, with some buggy graphics.)
Progress to further reverse engineer the game has stopped since channel owner has unfortunately passed away, rest in peace.
Link found here :
https://www.youtube.com/watch?v=_cRo-3kurig