From the rule sheet
Wake up your environmental Protection consciousness
The Nature is easy to learn and quick to play. It's best for four or more players, though you can play with three people or more than five. The game aims to help players developing the consciousness of environment protection through fun and enjoyment.
Object to the game:
The object is to get living animal cards as many as you can in each round. Points score on the cards in player's "Zoo" card pile but minus points in the player's "Tomb" card pile.
Game play:
Player started with 5 cards. Each round he can 1) play a card; 2) draw a card and discard a card into his "Tomb" card pile.
When every player has play one card, the round is over. The greatest card of the latest colour will be the winner of that round. The winner can collect all the cards and place them into his "Zoo" card pile.
Game end when the last card is drawn from the deck.