as Reicast/Flycast years ago, these files are often unofficial and may contain malware. Requirements
I transferred the APK to my phone. Android immediately threw up a warning: "Install blocked. For your security, your phone is set to block installation of apps from unknown sources." nulldc apk android link
The Android version of nullDC, often referred to in development circles as "nullDC-e" or "reicast," served as the foundational codebase for what would eventually become the industry standard for mobile Dreamcast emulation. It proved that the ARM-based processors found in smartphones were capable of handling the complex PowerVR graphics architecture of the Dreamcast. Technical Requirements and Performance as Reicast/Flycast years ago, these files are often