DJMax Portable: Black Square

DJMax Portable: Black Square is a rhythm action game, it added various enhancements built on from DJMax Portable 2 and DJMax Portable Clazziquai Edition.

Anti-Piracy#

To do: Shorten the video to only show the Black Square section.

The game performs two checks to detect if a game is being run off the UMD. upon startup, the game checks the directory ms0:/PSP/ISO (on modded PSP systems, this allows ISO games to be run) on the inserted Memory Stick. If the directory is detected on the inserted Memory Stick, The game will delete certain ISO files on the ISO root of the Memory Stick before quitting the game.

As with most DJMAX Portable games in the series after DJMAX Portable International, The game will perform a check on the read speed to make sure that the loading times are equivalent to a UMD. If the loading times are faster (likely due to running an ISO off the Memory Stick), Then after playing the game for a few minutes, the anti-piracy will; Add distortion to the background music and randomize the playback speed of the keysounds and SFX audio, after a few additional minutes, the distortion becomes louder and then slowly get higher pitched overtime until turning into a loud, distorted sound effect. Shortly after, the game will flicker the graphics list to randomly skip drawing textures which causes the screen to flash rapidly. After attempting to change the song one or two times, It will lock up the game. This seems to be absent in the Japanese version.