The 12 pieces in this Supplement are all the polycubes shapes from 1 through 4 unit cubes in size. They are matched perfectly to the size of Quintillions. Our names for them are (left to right):
First row: Cube, Dicube (Domino), Tricube I, Tricube V
Their total volume of 41 cubes cannot form an even block, though countless other interesting shapes are solvable. The set includes the 7 pieces of the original Soma Cube, so you can replicate any Soma pattern, as well. $35
Second row: Tetracubes V1, V3, T, S, L
Third row: V2, O (Square), I.