Poptimum

Poptimum is an optimisation game rather than a puzzle with one answer. Each day brings a set of fridge magnets in odd shapes, such as a panda, a koala, a fox, a pretzel, a moon and a candy cane, and a board to fit them on. The board's shape changes too: a circle on one day, a plus sign on another. Magnets may not overlap or hang off the edge, and a magnet that does turns red, so the job is to turn and nudge them until as much of the board as possible is covered. The fill percentage under the board updates as you go.

There is no fixed finish. You keep improving your layout for as long as you like, with undo and redo, a button that returns to your best arrangement so far, and a reset for a fresh start. Your best score goes to a shared table with no name attached, and the game shows it beside the top score from your country and the top score in the world, marking it when you take either. You can share an image of your packed board.

The game is made by Shay Davidson, and the day changes at midnight UTC. It is free in the browser on a computer or a phone, needs no account and shows no ads. It suits players who enjoy fiddling with shapes and chasing a fraction of a percent more than solving a clue.