Foldlock, an iPad puzzle-box game built around the lid

The full story

Foldlock is a slow puzzle-box mystery for iPad and iPhone in the spirit of The Room. A mother has left seven old boxes, from a jewellery box to a writing slope, each holding an unsent letter and the way into the next. A brass lever moves the lid shut, open a crack, upright or flat, and some clues only exist in one position: a code shows only when lamplight gets through the gap, and a raised lid works as a mirror.

There are 55 puzzles with no timer and three levels of hints each. It costs $4.99 once, with no adverts, in-app purchases or data collection. The developer wrote the code with Claude, which also helped draft the story text; the boxes are Blender models with free CC0 textures, and there are no AI images, voices or music.