Since the PSP Go lacks a disk drive, you must use Custom Firmware to play backups or imported "ISO" files of these Japan-exclusive titles.
Many entries in the series, such as All Star Yakyuken 2 Portable , were released as UMD Movies or video-intensive games. This makes them particularly large and reliant on the UMD drive in standard PSP models. Preparing Your PSP Go for Custom Content All Star Yakyuken Battle Psp Go Custom
All Star Janken Battle Portable (Japan Version) PSP - YesAsia Since the PSP Go lacks a disk drive,
Players engage in "Yakyuken," a group recreational game from Matsuyama, Japan, which in this digital format functions as rock-paper-scissors. Success in the game leads to various rewards, often involving high-performance graphics of real-life idols. All Star Yakyuken Battle Psp Go Custom