Translation from http://sunsite.informatik.rwth-aachen.de/keirat/txt/C/Cameo.html:
The game board is a 8x8 grid. The grid itself is divided into four 4x4 areas of a different color. On each area four rectangular blocks of the same color as the area are placed.
The object is to move the blocks in such a way that at the end the areas contain blocks of a different color matching a previously drawn objective card.