An ecosystem combines living organisms and the environment, which exist in close connection with each other. A change in any element affects the entire ecosystem, but due to its stability, equilibrium is quickly restored.

Sometimes, a random event leads to the butterfly effect, an unpredictable cascade of changes that can completely transform the biosphere.

Butterfly Effect is an add-on expansion to the game Evolution: New World. The new animal traits allow you to fine-tune the game ecosystem, create new survival strategies, and maybe even win the Alien World scenario.

With Butterfly Effect, you can increase the number of players up to 6 by adding the expansion components to the base set of Evolution: New World. If you’re playing with two or three people, simply remove half of the cards for convenience — the game includes 2 copies of each trait and Area card, except for the Anglerfish card (6 copies). Shuffle the Evolution deck and Area cards deck thoroughly.