Nikke's 2.5th anniversary banner.

Goddess of Victory: Nikke celebrated its 2.5th anniversary in the Philippines on Sunday, May 4, 2025, at the Manila Ocean Park in Metro Manila. The Ocean Park location was chosen due to the release of the newest unit in the game, Little Mermaid, also known as Siren.

A Nikke activity booth was available in the main hub of the Manila Ocean Park. Attendees could participate in the booth and obtain merch without purchasing an entrance ticket from the Park. Additional activities were held at the Park's special Mermaid Show venue. The Mermaid Show entrance cost ₱750 per head.

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  Cosplayers in the event headlined by Roxanne Kho, who cosplayed as Little Mermaid (left anime character) in the event.