Taïki

Taïki is a family-friendly must-follow trick-taking game.
At the beginning of a round, you get an equal number of Sun and Moon cards (depending on player count) then an additional card at random.
Each round you try to get as many tricks in the Sun suit as in the Moon suit. Achieving that gives you two Balance tokens per pair of tricks. Ending a round with an unbalanced number of tricks in each suit results in you discarding as many Balance tokens as the difference between your number of tricks in each suit.
After three rounds, the player with the most Balance tokens wins.

Some special cards can be played as either suit. Some others can be either the highest or the lowest of its suit.