Grand Theft Auto: Vice City is an iconic action-adventure game developed by Rockstar North and published by Rockstar Games. Released in 2002, it has become a classic in the gaming world. The game's popularity has led to the creation of various mods, including the CLEO (CLEO Library) mod, which allows players to extend the game's functionality and features. In this paper, we will discuss the GTA Vice City 1.12 CLEO Mod APK, its features, and how it enhances the gaming experience.