While hundreds of card games exist, most fall into broad mechanical categories. Two of the most foundational and widely played types are Trick-Taking Games and Building (Melding) Games.
Core Mechanic: Play proceeds in rounds called "tricks." Each player plays one card to the trick, usually following suit if possible. The highest card of the led suit (or the highest trump) wins the trick.
Goal: Varies by game—win the most tricks (Whist, Spades), win specific tricks (Hearts), or bid accurately on how many tricks you'll take (Bridge, Euchre, Oh Hell!).
Key Examples:
Core Mechanic: Players draw and discard to form their hand into valid combinations: Sets (3+ cards of same rank) and Runs/Sequences (3+ consecutive cards of same suit).
Goal: Be the first to meld your entire hand (go out) or score points for melds on the table while minimizing deadwood (unmatched cards).
Key Examples:
For completeness, other distinct types include Shedding Games (get rid of cards first, like President), Matching/Fishing Games (capture table cards, like Casino or Scopa), Comparing Games (compare hands, like Poker or Baccarat), and Solitaire/Patience Games (single-player sorting).