I’ve created a proof-of-concept for a maze game:
It’s very simple: you start in the centre of a maze and have to find your way out. You can only see the area immediately around you, and you can drop (or pickup) breadcrumbs to help you find your way. There’s potential to add more things (e.g. monsters, traps, collectables, etc.) but I don’t think I’ll get to it. Perhaps this’d make a good demo/example others can build off…