Birthday Blob is the only skin released under the Free Gift part of the Agar.io Birthday offer. It could be collected for free in mid July 2018.
Birthday Blob could be acquired in the Skins Shop under the 'Free' tab for a limited time. This skin was not available for purchase and there may be few opportunities to collect it in the future.
Details of this skin may vary depending on location, platform or time.
Note: Birthday Blob was released again for a limited time as part of the Birthday Bonanza offer in July 2022. For this release in could be purchased for $2.99 in a single item deal that included a Superior Potion, 5000 coins and 125 DNA.
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Birthday Blob - Full Size