This phrase refers to modifications made to the mobile version of Grand Theft Auto: San Andreas, specifically on Android devices, utilizing the CLEO library. The CLEO library is a software add-on which enables the installation of custom scripts and functionalities within the game that are not originally present. For example, these modifications can range from adding new vehicles or weapons to implementing entirely new missions and gameplay mechanics.
The significance of these modifications lies in their ability to extend the lifespan and replayability of the game. They provide a means for players to personalize their gaming experience and introduce elements beyond the original design. Historically, the CLEO library was initially developed for the PC version of the game, but its adaptation to Android has allowed for similar customization on mobile platforms, giving players a wider range of options to tailor their gameplay.