Beatmania IIDX[a] (stylized as beatmaniaIIDX) is an arcade music video game developed by Bemani and published by Konami.

After the surprise success of Beatmania, Benami conceived IIDX to simulate an actual disc jockey (DJ) live performance.

The objective of Beatmania IIDX is to perform songs using a controller with seven key buttons and a scratchable turntable.

[3][4] The 7 Keys mode utilizes all buttons[3] and Expert has the player select a course and obtain the highest score.

It was designed to simulate the experience of a DJ performing songs live at a music venue which gave it a "club Visual Jockey feel."

According to Foster, many players were initially not impressed with performing old songs on upgraded hardware, so they switched to Beatmania 4th Mix.

In late 1999, the publisher hired artist Goli to design graphics and characters for Beatmania IIDX 2nd Style.

Foster stated these updates popularized IIDX to the point where it overshadowed its predecessor, as the game not only earned more new songs, but became very difficult.