A lawsuit filed by Konami on May 9, 2005, asked for an injunction against the sale of the upgrade kit version.

The game also features a modified interface, based on the first version but recolored red and incorporating other changes.

The sequel includes new songs from established artists like ZiGZaG, Kid Whatever, Inspector K, Nina, Digital Explosion, and Machinae Supremacy.

As In The Groove 2 matured as an arcade game, Roxor released patches, called "revisions", that could be applied to the machine in order to update it, fix bugs, adjust timing window errors, and other issues as they were discovered.

The patch adds a feature that allows players to bring custom songs from home and play them on the machine.

When the player inserts their USB card into the machine they can then select the song from the game menu.

Players could manipulate the metadata in the header of the OGG file to make the game think the song is only 1:45 long.

[4] This allows songs of any length to be played on the machine as long as the music file is still under 5 MB in size.

While R23 has timing corrections and bug fixes, it forces all custom songs to end at 120 seconds of play regardless of the use of the Ogg Length Patch.

Some technologically savvy players have found methods of hacking the game and loading additional content onto an "In the Groove 2" machine.

The In The Groove 2 arcade machine has a regular computer inside that runs a distribution of Debian Linux and a modified version of the open-source StepMania software.

Players who can gain access to the data on the hard drive of the computer can modify configuration files, add new features, load new songs, change graphics or artwork, or modify the behavior of the StepMania engine running in the game.

The most popular methods of hacking involve booting the machine into a rogue operating system (usually a live Linux distribution such as SLAX Frodo).

Due to the popularity of the franchise, some players modified the game to be played on home computers, which in 2009 became released as OpenITG, based on the code for StepMania 3.95.

In 2016, an internet user known as Taro4012 released NotITG, a fork of OpenITG which is "designed to make it easier for mod file creators to implement their ideas.

It aims to preserve compatibility with all existing StepMania 3.95 and In The Groove mod files, and be the definitive environment for creating and enjoying that content.".

Still, there are tournaments held throughout the Americas and as of recently, Europe such as the Slippers Hurricane Summer Speed event (France), today that give out cash prizes and other various gifts, such as arcade tokens, coupons, and other video games.