Fighting games are no stranger to crossovers and guest characters in its roster. This even extends to spin-offs of their franchises, such as SNK's action RPG mobile game, The King of Fighters All Star. Released in 2018, this free-to-play mobile beat-em-up RPG brings together many characters across SNK's libraries, including the sagas from KOF's mainline entry games. While many characters from the franchise like Mai Shiranui, Kyo Kusanagi, and Terry Bogard have been playable characters, All Star occasionally has crossover events.