Five things your thumb can do

Cornerlet plays with one finger. You will find all of this by trying, and none of it can go wrong.

Peel

Touch a sticker on the sheet and it comes off in your hand. Tap it and it lands in the middle of the room; drag it and it lands where you let go. Turn the pages with the arrows: everything the world has is on the sheets, all the time.

Put it on something

Drop a cat on the sofa and it rides the sofa. Move the sofa and the cat comes along. Pick the cat up and it is free again. A cup on a table, a plant on a shelf: whatever sits on something moves with it.

Push it behind

What you touch comes to the front, like in a real album. Two little buttons in the arc send a sticker one step behind what it covers, or bring it one step forward. A rug always goes to the back by itself.

Turn it, size it, mirror it

Pinch to resize, twist to tilt a little, tap the arrows to face the other way. Tap the moon in the corner and the room goes dark, with the lamps lit; the little bulb in the arc lights or dims anything.

Take a picture

When the room looks right, the camera keeps it in your book. You can come back to it, change it, or follow it again sticker by number. There is no score and no end: you stop when you like what you see.