Double Seven

From BoardGameGeek:

Double Seven is a modern twist on classic rummy-style gameplay. You want to collect large sets of animals to score, but you're not too picky about which animals you collect, trading sets with other players in order to get ones that you can grow. The game features eleven tiles each of eight types of animals, along with three clovers (jokers), with players starting with three random tiles in hand. At the start of your turn, if your hand is empty, draw three tiles; otherwise, draw two. Next, take as many actions as you like in whatever order, with all but one of them being repeatable: Start a family: Place 2+ matching animal tiles from hand in front of you to form a new family of a type you don't have. Expand a family: Add 1+ matching tiles (or clovers) to a family in front of you. Swap families: Exchange one of your families with an opponent's family of the same size. Claim a clover: Swap a clover in a family on the table with the appropriate matching animal tile from your hand. Swap two for one: Once per turn, discard two tiles face up from your hand to draw one new tile from the table, whether face up or face down. When expanding a family, if you bring it up to seven or more tiles, claim a 7 token from the reserve. The second time you claim a 7 token, take the 77 token as well, after which each other player takes a final turn. Score 1 point per tile in front of you on the table, as well as 1 point per 7 on tokens you've claimed. Whoever has the most points wins.