Bobpm: Squared comes as a pdf file (use link below to download or print). The pdf includes the printable rulebook and pieces.
Sxyzm recommends using 8.5" x 11" 110 lb. printed paper with a laser jet. Use a scissors to cut out the pieces. Fold the rulebook in half and in half again to establish the four panels. Fold the dice together and glue or tape tabs inside. Rulebook Pages can be printed double-sided to reduce paper use and number of components.
For a higher quality version, purchase or create tiles. You will need a set of 0.5" tiles with 32 red, 32 blue, 32 green, and 32 yellow. You will need a set of 1" tiles with 8 red, 8 blue, 8 green and 8 yellow. You will need a set of 1.25" tiles with 4 red, 4 blue, 4 green, 4 yellow, and 8 white. You will also need at least 2 D6 dice (1 red, 1 blue, 1 green, and 1 yellow recommended).