Instructions
Download a custom map from the Internet. Save the file to an easily retrievable place on your desktop.
Launch "Creeper World" and navigate to the "Custom Maps" screen in the options menu.
Click on the blue button entitled, "Import Custom Maps." Browse to the custom map you downloaded in Step 1. Double-click on the file.
Return to the "Custom Maps" screen. Scroll down the titles until you find the new custom map from Step 1. Double-click on the title. Custom maps are played in the exact same way as maps included by default with the game. Connect various guns and towers to shoot the blue creepers from invading your kingdom. To win, you must turn the entire terrain green.