Akai Katana: [pal][ntsc-u][ntsc-j][iso]

is a side-scrolling "bullet hell" shoot 'em up (shmup) developed by CAVE . Your text refers to the different regional releases and the file format (ISO) often used for emulation or disc backups. Regional Versions

: Available as a physical import or digital download via PSPrices . Akai Katana [PAL][NTSC-U][NTSC-J][ISO]

: Physical editions are available from retailers like Limited Run Games . is a side-scrolling "bullet hell" shoot 'em up

: The European and Australian version, published by Rising Star Games in 2012. which was region-locked.

: The original Japanese release, often titled Akai Katana Shin (the "Shin" refers to the upgraded home console version). Modern Releases (Region-Free)

: The North American version, also released in 2012.

The game was originally released on the in 2011/2012, which was region-locked.