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

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

: The European and Australian version, published by Rising Star Games in 2012. Akai Katana [PAL][NTSC-U][NTSC-J][ISO]

A remastered version titled was released in December 2022 for modern platforms. These versions are generally region-free , meaning a Japanese disc/cartridge will work on any console. is a side-scrolling "bullet hell" shoot 'em up

The game was originally released on the in 2011/2012, which was region-locked. A remastered version titled was released in December

: Available as a physical import or digital download via PSPrices .

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