Amazon Rainforest is a free and open-source New Tab Extension for Google Chrome. 

The extension contains custom images of the Amazon Rainforest. You can choose to display random photos or just your favorite ones. The extension also allows you to display weather and time widgets.

You can even click on the joystick button to play games on your browser.

The package has no advertisements, and it is completely free to use.

How to install Amazon Rainforest:

Download and install the extension from this page.

Click on the extension and begin setting up your new tab page.