Treasure Island in one of the new adventures in agar.io. The theme for this adventure is the ocean and islands. It was open from January 26th to early February 2021. The game token that needs to be collected is the starfish. Treasure Island is the second adventure event offered in agar.io.
The prizes available in Treasure Island included the following: coins, DNA, game-boosts, potions and rare skins. The two skins that can be unlocked in this event are Bottle Map and Treasure