Petroglyph

Find and collect sets of matching petroglyphs in a four by four tableau of face down cards. The four different colours make up a set in different ways. Red and yellow sets are two cards. A blue set is three cards. A green set is anywhere between one and six cards. If you turn over cards of different colours, you may shuffle a row or column before the turn moves to the next player. 17 cards. Each game one card is put aside without players knowing which card it is. —description from the designer