If you are looking for a more serious Batman experience on a portable device or emulator: LEGO Batman - Sony PSP | Warner Bros. Games - GameStop

By using tools like UMDGen and CSO Compressor (or downloading trusted pre-compressed packs from CDRomance), you can enjoy the Dark Knight's adventures without sacrificing your entire storage library.

: Intends to blow up Gotham Cathedral and release deadly laughing gas. His team includes Harley Quinn, Scarecrow, Mad Hatter, and Killer Moth. The Villain Campaign

You may find files named Batman Arkham Origins PSP . These are not official. Usually, they are either:

(Fan Port/Mod) : Some custom "highly compressed" mods exist in the community, often using assets from other titles to mimic the Arkham experience on mobile or PSP emulators. How to Use Highly Compressed Files : Look for .cso or .rar / .7z archives.

Open your file manager or ZArchiver and navigate to your folder. Locate the highly compressed Batman file.