Cactus was a skin added in 2016 as part of the Cinco de Mayo update and is the most popular skin from the update. It could be purchased for a limited time in the Agar.io store for 690 coins.
- The Cactus skin was released again as part of The Collector's offer in August 2017.
- Cactus was released once again for a limited time under the 5 De Mayo offer in early May 2020. This time Cactus could be purchased for 1500 coins.