A Korean turn-based mobile strategy RPG developed by Sigma Works and published by Smartjoy, launched in January 2019. A Japanese version launched in 2020. A global English version launched in 2026.
The game's setting is a world where human civilization has crumbled. The remaining human survivors work together with Auto Guard System robots and artificial humans called Bioroids to defend the planet against the Ironworms, alien parasites of unknown origin.
Became popular (as well as infamous) in the Korean community, thanks to its many suggestive character designs during its introduction by regular artists such as Snowball and Kakiman, as well as collab artists Asanagi and Obui. After the uncensored version's re-rating to adult only in Korea around August 2024, the game has since introduced numerous sexually explicit character design and skins.
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