Assemble by Cyclogram

A cyclogram is a nonogram drawn on a circle. Every cell sits on a ring, a spiral and a diameter, so each one is clued three different ways - and the hub at the centre belongs to every diameter at once.

Every board you solve collects cells, and cells open pictures. Each picture is then three more puzzles: a circular jigsaw, a sliding puzzle that wraps around the disc, and pieces to swap and rejoin.

Every board is generated and checked solvable by logic alone, so you never have to guess. No fail states, and it plays offline.