Nexon alleges that concept art, code, and Dark And Darker Gold in-engine assets from P3 were all used in Dark and Darker, additionally that P3 and Dark and Darker project leader Ju-Hyun Choi illegally transferred a significant amount of development materials to a private server before being terminated from Nexon. 

Ironmace frames the private server accusation against P3 and Dark and Darker project lead Ju-Hyun Choi as a belated retaliation for his choosing to leave Nexon in the middle of 2021, claiming that his usage of a private server to store game assets was an outgrowth of work from home adaptations during Covid lockdowns.

As Ironmace puts it, Choi's usage of the server was discouraged by Nexon, but never directly shut down, and receded to a secondary concern as the team returned to office. It was when Choi announced an intention to leave Nexon, Ironmace claims, that legal proceedings against him began and he was terminated by the company. 

Further, Ironmace alleges that Nexon only copyrighted its P3 development materials in February of this year, seemingly in response to Dark and Darker's success in the Steam Next Fest.

Ironmace also had harsh words for Nexon's claim that the studio could not have produced working prototypes of Dark and Darker so quickly without trade secrets from Nexon: "The fact that a big game company like Nexon can't develop games this fast doesn't mean that other studios, big and small, can't develop at that speed."

While both P3 and Dark and Darker are being made using Unreal Engine, Ironmace claims that P3 was "written while learning because none of the programmers had any experience using Unreal Engine at the time of the project," and that "using the code and assets of the P3 project as a reference would not have buy Dark And Darker Gold been helpful in proceeding with the Dark and Darker project." 

To bolster the claim, Ironmace released partly redacted git logs of Dark and Darker's development, a massive document stretching back to the project's inception in September 2021.