In order to play this free game you need to download and install Flash.

A text-only description of the game is also available.

Home Play the Treehouse Games Buy The Go Green Activity Kit
Go Green Stamp pane


The Go Green games site was inspired by a pane of 16 stamps issued to promote simple actions each of us can take to conserve natural resources and take care of our environment. The Go Green stamps were illustrated by artist Eli Noyes of San Francisco, California, who also provided the illustrations for this site.

Learn about the Postal Service's green initiatives by visiting

About the games

We've developed three environmentally themed games that use memory, critical thinking, and coordination skills. These games are intended for families with kids ages 6-10, but can be enjoyed by a wide variety of ages. Instructions can be found on each game's introduction page.

Access to these three games requires a code that comes with the purchase of the Go Green Family Activity Kit. To learn more or to purchase, please visit

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