Sloop — released in Germany as Quanto — uses gameplay similar to that of Casino and Scopa with players trying to use numbered cards in hand to claim cards available on the table, but the game includes a few twists.
To start, the deck includes 122 cards, ten copies each of cards numbered 1-12 (with one rainbow card of each number) as well as two jokers. (Quanto has 110 cards, with one copy less of each card.) Each player starts with a hand of four cards, and four cards are laid face up on the table. On a turn, a player takes one of three actions:
After taking an action, you refill the face-up display to four cards and your hand to four cards. If you use a rainbow card for action 1, you can claim another face-up card of your choice; if you use one for action 3, then you add an additional card to the display.
When the deck runs out and all players have emptied their hands, the game ends and whoever has the most cards wins.
Sloop includes partnership rules that allow partners to add to (but not claim) one another's builds and to swap cards with one another during play.