Mischievous is one of the five skins released under the Skins part of the Agar.io Birthday offer. It was available for individual purchase with game coins in late July 2017.
Mischievous could be purchased in the Skins Shop under the ‘Birthday Special’ tab for 4900 coins. This skin was available for a limited time and may not be available for purchase in the future.
Details of this skin can vary depending on location, platform or time.
Note: Mischievous was released again for a limited time as part of the All the Internet Things offer in mid November 2019. The price for Mischievous remained at 4900 coins for this release.