Sony has opened pre-orders for the “Shapes of Play” collection, including a box of magnetic blocks retailing for $79.99.

Releasing in December, the magnetic blocks come in the shapes and colors of the Dualshock face button symbols, but can be disassembled into what are essentially 3D tangrams. The product page shows the blocks configured to spell out “PLAY.”

It is one of three collectibles Sony has created for the 30th anniversary of the original PlayStation’s release. The announcement of the prices and pre-orders for each item came via PlayStation’s website.

Also available for pre-order in the Shapes of Play collection are a set of stress balls for $34.99 and a board game similar to Tic-Tac-Toe for $44.99.

Sony first revealed the collection without the prices on Sept 5 as a part of a broader 30 year anniversary announcement.