List of third-party OPK applications

This article lists third-party OPK-format applications built for the FunKey S. Freely downloadable from this page, these applications allow users to add additional functionalities to their devices. Once downloaded, these files are placed in any folder at the root of the device's file system, with the Applications, Emulators, and Native games folders available by default for file management. The application can subsequently be accessed from the Gmenu2x launcher, where it is sorted automatically by its type: application, emulator, or game. As the device's Instant Action autosave feature is implemented on a program-by-program basis, users must remember to manually save their progress in any third-party program that hasn't implemented Instant Action. Also note that OPK applications built for systems other than the FunKey S are incompatible with it and will not function without modification.

Applications
The following applications are any programs for the FunKey S that are neither emulators nor games. Alongside each application is listed a general description of it.

Emulators
The following emulators add to the capabilities of the FunKey S by allowing emulation of several currently unsupported systems and improved emulation of several currently supported systems. To give users a sense of how well these emulators function, each is rated from low to high for both overall emulation accuracy and speed. To improve the CPS2 emulation of SDL Retro, this configuration file should be placed in the /mnt/FunKey/.sdlretro/cfg location of the FunKey S file system. For PC-FX emulation, a PC-FX BIOS file must be placed in the /mnt/Funkey/.pcfxemu location of the FunKey S file system.

Games
The following applications are freeware games that have either been ported to or natively developed for the FunKey S. To facilitate list navigation and game selection, alongside each game is listed its genre. To play the OPK ports of commercial games, one or more additional files containing necessary copyrighted assets must be provided by the user from their own legally acquired copy of the game. The names of such file(s), which are in bold if required, and expected file location are listed next to each applicable game. Doom, Doom II, and Final Doom each require their own IWAD file, Quake is the shareware version with one file and the complete version with two, and Wolfenstein 3D requires several of the listed WL6 file type.