While games in the first two sections should generally be played via the default emulators and those in the last two should generally be played via third-party emulators, any game listed in this article not marked in bold should have improved compatibility in at least one of the higher CPU usage third-party emulators.

These categories list games that are glitch-free if configured correctly, slightly-glitched, heavily-glitched, and incompatible, respectively. As the compatibility of such games can range from fully-compatible to fully-incompatible, compatibility issues have been divided into four main categories based on severity: fully-compatible, fully-playable, partially-compatible, and incompatible. This article lists games that have compatibility issues with the default FunKey S emulators.