Open Source Kotlin Emulators

Lemuroid is an open-source emulator based on Libretro. It's designed to work on a wide range of devices, from phones to TVs, and to provide the best user experience on Android. It's completely free and without ads. Keep in mind not every device can emulate every console. A very powerful one is required for more recent systems such as PSP and DS and 3DS. This application does not contain any games. You need to provide your own legally owned ROM files. It originated from a rib of Retrograde, but graduated to a standalone project integrating LibretroDroid.

melonDS Android is a mobile port of the melonDS emulator, designed to run Nintendo DS and DSi games on Android devices with a focus on performance and usability. It brings the accuracy and features of the original desktop emulator to smartphones, enabling users to play games and run homebrew software directly on mobile hardware. The emulator includes support for features such as save states, ROM loading, and integration with third-party frontend launchers. Performance is optimized through techniques like just-in-time (JIT) compilation and threaded rendering, allowing many games to run at full speed on modern 64-bit devices. The project also supports compressed ROM formats and flexible file handling through Android’s storage access framework. While some advanced features such as local multiplayer are still missing, the emulator continues to evolve with frequent updates and community contributions.