Head Ball 2 is a free promotional skin released in early September 2019. It was offered to promote the mobile game Head Ball 2.
Head Ball 2 became available to all players once 150,000 downloads of the game was reached. It could then be collected in the Skins Shop under the ‘Free’ tab. However, the ability to collect or purchase this skin in the future may be limited.
Details of this skin may vary depending on location and platform.
Note: This skin can only be acquired on the mobile version of Agar.io. However, once acquired, it can be used on the browser version as well.