Trigon
A quick two-player game — take turns drawing lines between six dots, and whoever first closes a triangle with their own lines loses.
Fold to find the shape.
You are shown a shape and given a sheet of coloured paper. Drag the paper across a crease and it folds — the flap turns over, lands on the other side and takes its colours with it. Keep folding until what lies on the table matches the shape.
A fold is never only a move. The paper is mirrored, so a shape flips handedness; it is moved, so it covers something else; and it is stacked, either over or under what it lands on. Choosing over or under is the whole game in the later chapters, because it decides which colour ends up facing you. Holes are what let you see that at all: two holes stacked on top of each other become a window, and a hole over a colour shows that colour through the sheet.
The chapters start with a single crease and end with sheets folded deep enough that the order of the layers is the puzzle. Every level was checked by a solver that searches all fold sequences, so the fewest possible folds is a proven number rather than a guess — and solving a level in exactly that many earns a star.
Nothing is timed and nothing is scored. The paper rustles when it settles, the phone gives a short tap, and that is the extent of the noise.
The levels and your progress stay on the device, and there is no account and no sync. The one thing that can leave the phone is anonymous statistics about how far players get, and they stay off until you turn them on.
A quick two-player game — take turns drawing lines between six dots, and whoever first closes a triangle with their own lines loses.
A tracker for recurring responsibilities — sheets weekly, kettle descaled monthly, bike serviced each spring. Complete a task and the next one schedules itself.
Minesweeper on a sakura keyboard — every tile is a keycap that presses down with a thock and sinks into the case to show its number. Four board sizes, no account, no ads.