https://store.steampowered.com/app/585690/Minimalism/
This one is B&W, has just jump and wall jump, you die in one fall, line 2D (like Linea, barum, barum). We could make it with Linea, Ser Clive and some changing charater, use full hi res and 4 colours - best if it could fit MD and 96k mem on unexpanded QL.
In my mind it could be done in SuperBASIC or ASM
Would donate small amounth e.g. 10-20 euros via PayPal