Devsisters said on Thursday that its mobile idle role-playing game "Raising CookieRun-CookieRun: Crumble" (CookieRun: Crumble) has topped 20 billion won in cumulative sales a month after its release.

CookieRun: Crumble, developed by Studio Kingdom, launched in the global market on July 30. Cumulative users have now surpassed 2.5 million.

Devsisters said a high share of users have not experienced previous CookieRun series titles. The company sees inflows not only from existing intellectual property users but also from users of idle and character-growth genres.

Apple App Store users currently rate it 4.7 out of 5.

App market rankings also rose after a content update. Devsisters added new cookies including the TSSR-grade "Brightseeker Cookie" and a guild raid battle on Wednesday, and expanded the main stage. After the update, its real-time sales ranking on South Korea's Apple App Store rose as high as second place.

CookieRun: Crumble is an idle RPG using the CookieRun intellectual property, which has recorded 300 million cumulative users. It combines the CookieRun universe and characters with a growth-based play style.

Devsisters plans to add new content through regular updates going forward.