Bohnanza is the first in the Bohnanza family of games and has been released in several different editions.
In the game, you plant, then harvest bean cards to earn coins. Each player starts with a hand of random bean cards, and each card has a number corresponding to the number of that type of bean in the deck. Unlike most other card games, you cannot rearrange the order of the cards in hand, so you must use them in the order you picked them up in-game - unless you can trade them with other players, which is the heart of the game.
On a turn, you must plant the first card(s) from your hand into the "fields" in front of you. Each field can only contain one type of bean, so if you need to plant a type of bean that is not in one of your fields, then you must harvest a field to make room for the new arrival . This is generally not good! Then you reveal two cards from the deck, and you can then trade those cards and any cards in your hand for cards from other players. You can even make future pledges for cards received now! Once all trading is complete - and all trading in a turn must involve the active player - you end your turn by drawing cards from the deck and placing them in the back of your hand.
When you harvest beans, you receive coins based on the number of bean cards in that field and the “beanometer” for that particular type of bean. Flip 1-4 cards from this field to turn them into coins, then place the rest of the cards in the discard pile. When the game runs out, shuffle the discards by playing the game twice more. At the end of the game, everyone can harvest their fields, then whoever has earned the most coins wins.