Seven Deadly Sins: Idle Adventure Welcomes New STR-Attribute Debuffer: The Serpent Sin of Envy Diane!

Netmarble is shaking up the gameplay in The Seven Deadly Sins: Idle Adventure with the addition of a powerful new hero. Even in an idle game, strategic combat is key, and the arrival of The Serpent Sin of Envy Diane—the third Legendary Diane—brings a significant STR-attribute debuffing capability to your team.

This new character is available via Rate Up Summon Tickets or Diamonds until December 17th. The update also introduces Nightmare Stages, where you can collect Nightmare Traces. These Traces can be exchanged for Gems at the Wandering Merchant Shop or earned through the Wandering Merchant’s Suspicious Missions event.

Nightmare Traces are crucial for obtaining Mystical Gem Boxes, providing valuable buffs—particularly helpful when facing the challenging Advent Battle Boss, Galland.

Looking for more rewards? Check out our list of redeem codes!

Download The Seven Deadly Sins: Idle Adventure for free (with in-app purchases) on the App Store and Google Play. Stay connected with the community on the official Facebook page, explore the official website for more details, or watch the video above for a sneak peek at the game's atmosphere and visuals.