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beatmania IIDX

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Title Screen

beatmania IIDX

Developer: Konami GMD
Publisher: Konami
Platform: Arcade (Konami Bemani Twinkle System)
Released in JP: February 26, 1999

CopyrightIcon.png This game has hidden developer credits.
DevTextIcon.png This game has hidden development-related text.
GraphicsIcon.png This game has unused graphics.
MovieIcon.png This game has unused cinematics.
Carts.png This game has revisional differences.

For beatmania IIDX, Konami added two more buttons and called it a day.

Now that is complicated. Like... trigonometry. Haha.

Unused Graphics

Song Title Graphic Placeholder

Found at the very end of file SEL16.MGP is a placeholder song title graphic, reading "Fujii DX", which refers to Takehiko Fujii, who composed two tracks for this game.


Early Build Remnants

Several remnants of early builds still exist within the decompressed ISO file of version JAA, the game's initial release. All of these graphics seem to be dated around a month prior to the game's release. Note that the palettes cannot be truly determined for now.


File CONTI16.MGP is an early version of the assets seen in the continue overlays. They are very barebones compared to the final assets, present in file CONT16.MGP.

Early Final
IIDX1-gameoverEARLY.png IIDX1-gameoverFINAL.png
IIDX1-welcomeEARLY.png IIDX1-welcomeFINAL.png
IIDX1-getreadyEARLY.png IIDX1-getreadyFINAL.png

Name Entry

The font used in the name entry sequence was originally going to be hand-drawn, more or less fitting its background. This early variant can be found in ENT16.MGP, compared to the final file NAME16.MGP.

Early Final


  • LEVE16.MGP is an early version of the final results screen asset package. Compared to the final LEVL16.MGP, only the rainbow ranking text sprites are present.
  • MAIN256.MGP is an early version of the Single Play gameplay HUD. The color indexes seem to be different from the final SMAIN256.MGP, although whether the palette is truly different cannot be known yet.
  • TECHNO.MGP is an early version of the overlay sprite sheet for the song special energy. Although it lacks many overlays present in the final ENERGY.MGP, the available ones don't seem to be different from the final.

Extended Intro Sequence

The game's opening FMV is significantly longer than what is visible in-game, about twice as long in fact. This can be seen by either playing the video in the test menu or by taking the Video CD the movies are stored on and playing it in a separate player. This applies to substream and 2nd style as well since they use the same intro sequence.

Video as stored on disc Video as seen in-game (starts at 0:26)

Development-Related Text

HDD Data

At the beginning of the game's HDD data, the following credit can be found:


At the time of beatmania IIDX's release, Youhei Shimizu worked for Konami as a sound programmer, and was credited on this game as such. GQ863 is the model for beatmania IIDX.

Build Date

The game's build date can be found in the title of the game's uncompressed ISO:

ver.JAA ver.JAB

Revisional Differences

Two known releases of the game exist, officially known as JAA and JAB, respectively. The only difference seems to be on the song flo jack, where it was renamed to The theme from "Flo-jack". This change is reflected on its splash and song selection screen graphic.

ver.JAA ver.JAB
IIDX1-flojackOLD.png IIDX1-flojackNEW.png