ISOs (International Organization for Standardization) and ROMs (Read-Only Memory) are file formats used to store and distribute game data. In the context of PPSSPP, ISOs are used to play PSP games on the emulator.
For the best performance on Android or PC, adjust these PPSSPP settings : Set to Vulkan for better speed on modern devices.
Both are official PSP games with tag mechanics only in specific modes, not full tag battles like TTT2 .