Cassino is a "fishing" game where players capture cards from the table by matching or summing values, earning points for specific captures.
Deal 4 cards each and 4 to the table face-up. The rest is the stock.
On your turn play one card to capture table cards matching its value, or summing to it. Alternatively, "build" a pile by combining cards into a value you can capture later.
Points for most cards (3), most spades (1), the 10 of diamonds "big cassino" (2), the 2 of spades "little cassino" (1), and aces (1 each). First to 21 wins.
Combining table cards into a single pile whose total value you intend to capture on a later turn.
The 10 of diamonds, worth 2 points when captured.