: It can generate necessary license keys for legacy software.

: Tools like HgPatcher act as "universal" formats for patching games made in the engine. These allow users to replace sprites, audio, and code without having the original source project files, a process vital for the modding communities of games like Undertale or Deltarune . Ethical and Legal Landscape

Many industry analysts believe that the rampant piracy facilitated by tools like the 2021 patcher was a primary driver in this decision. It proved that the user base wanted the engine, but the monetization model was outdated. By removing the price barrier, YoYo Games effectively "killed" the need for the patcher.