The run
There is no back page
Turn a sheet and there is always another one, and it is worse than the one before it. The only question a run asks is how far you got, and the only ending is your last ship.
Two fleets are drawn up on a sheet of graph paper. Press one of yours and flick: the line goes the way your finger was going, as far as you sent it, and comes off the edges of the page.
Take hold of one of your ships and flick. The line leaves the way your finger was moving when you let go, and goes as far as the speed of the flick carries it.
Lines come off the sides of the paper, and off a folded corner keeping nearly all their length. There's other stuff on the sheet too — a blot soaks a line up, a thumb smear sends it out crooked, and a doodled space rock stops it dead until two flicks have broken it apart.
A pencil that has been flicked has to be sharpened before it will draw again, and the bar won't let go of a lead until it is full. So does theirs, and theirs comes back quicker every sheet, for ever.
Clearing a sheet pays, and clearing it under par pays better. Between sheets the pencil case is open and everything in it is for sale.
The run
Turn a sheet and there is always another one, and it is worse than the one before it. The only question a run asks is how far you got, and the only ending is your last ship.
Every fifth sheet
Something bigger gets drawn on the page, in parts, and it grows a part at a time the deeper you go. Taking it apart is worth doing: it pays for the sheet it costs you.
Pencil Fleet is free and runs in a browser tab. Nothing to install and nothing to sign into.
Every run is a six-digit number, and it's sitting in the address bar while you play. Send somebody the number and they get your sheets in your order, which is the whole of the multiplayer. Your best run stays on your own machine.