Game is new in shrinkwrap.  There is something, pebble-like, rattling around in the box.  Since it's an all wooden game, I'm about 99% certain it's a busted silica gel back inside.

Quarto! has a 4×4 board and 16 pieces. Each piece has four dichotomous attributes – color, height, shape, and consistency – so each piece is either black or white, tall or short, square or round, and hollow or solid. The object is to place the fourth piece in a row in which all four pieces have at least one attribute in common. The twist is that your opponent gets to choose the piece you place on the board each turn.

AWARDS & HONORS
2001 Vuoden Peli Adult Game of the Year Winner
1993 Spiel des Jahres Recommended
1993 Mensa Select Winner