Pleatra
Fold the papyrus of the night until its windows show the seal.
A folding puzzle for iOSThree panels, two creases, one seal.
The rule of the fold
Every sheet in Pleatra is papyrus cut into square panels, and every panel into four quarters. A quarter is painted with a sign, an eye, an ankh, a scarab, a feather, a sun disc or a flowering reed, or it is cut clean through.
Drag
Take a panel and pull it across a crease. Everything on that side of the crease swings up with it, following your finger.
Turn
The flap lands face down and mirrored. What was on the left is now on the right, and the back of the papyrus faces the sky.
Seal
Fold until the sheet lies one panel thick. Look down through the windows: the four quarters must show the seal in the cartouche.
Twelve hours of night
Ra's barque sails through the Night Book one hour at a time, four vignettes to an hour. Seal three of them and the next gate opens. Each hour teaches one new thing about paper.
Ink is the measure
Every fold spends a drop from the ink pot, and taking a fold back does not return it. A vignette folded in its fewest folds is gilded in the book, and every drop you keep turns into red ochre.
Ochre is spent at the Barter Frieze, a long market painting you pan along: Seshat's Thread to show the next fold, fresh ink, an adze for a stubborn scroll, and new papyrus, river skies, clay seals and sails for the barque.
Rooms of the scribe's house
Coils of Apophis
Seven coils of the serpent, five scrolls each, and one ink pot for the whole coil. Run dry and the serpent holds.
The Scribe's Errand
A new papyrus on a potsherd every day. No streak to keep; it simply waits for you.
The Wesekh Collar
Twenty-four amulets strung on a broad collar, one for each deed of the night.
The Nilometer
Every fold, every turn and every drop kept, carved into the steps.
At the Twin Mirror the packet is read from above and from below at once.