The D4 (four-sided die)

The d4 is the tetrahedron of the set, and in a cozy sorting game its awkwardness is exactly what makes it easy to lose track of. It is the smallest die in the tray, it has no flat face to settle on, and once it is separated from its colour-matched siblings it tends to disappear into the clutter of a shop floor. When you sweep a shelf for a missing piece, the d4 is statistically the one you are most likely to have walked past twice.

In practice, pair the d4 early. Because a complete seven-piece set needs one of every classic polyhedral die, the d4 is not interchangeable with anything else: a stray d4 is always a set that cannot close. If you are sorting by eye, group colour first and shape second — matching the reddish, emerald or navy finish narrows the shelf, and the pointed silhouette confirms you have the right piece rather than a d20 that rolled into the same corner.

Colour and material also drive the shop value that Story Mode gates on. Two dice can share a colour and still differ in material, so a d4 that looks correct at a glance can still be the wrong partner for a set. Pick it up, read its finish, and keep the pairs together; that habit pays off on every subsequent die you touch in the same set.

How it fits the shop

This entry is part of the dice sets section of the guide. The d4 sits at the fragile end of the set: four triangular faces meeting in points. In a seven-piece set it is usually the piece you handle the most but think about least — grab one whenever a set is missing its smallest number.