Version 6111 (sometimes called build 6111 or v6.111) is not an official public update. It is believed to be an from around 2009–2010. This version contains several differences from the final game, including:
Below is a "Useful Paper" style guide to help you safely manage the installation of Plants vs. Zombies , specifically addressing how to handle unofficial versions if you choose to proceed. plants vs zombies 6111 install