GooTool 

GooTool is a utility to extend your World of Goo (an innovative physics-based puzzle game based on building structures using balls of goo) experience, enabling you to install new levels and mods to provide further gameplay, and to view and share your World of Goo accomplishments.

The tool allows you to view your profiles, view your tower image and stats, backup and restore your profile, move it between machines, and upload to your tower on the website, install and uninstall mods and new levels within the game, configure certain aspects of the game that you can't easily do otherwise - for example changing resolution or removing the loading screen video.

Moreover, it features an advanced mode for those interested in translating the game into their own language.