Indie Studios Sound Archive
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What is an ISA file?
The Gizmondo is a handheld gaming console that was available in 2005 and 2006, before being discontinued. Colors is a Gizmondo game that was never officially released, as it was not completed before Gizmondo production ceased. However, unofficial, not-quite-complete versions of Colors are available online.
In Colors, players engage in single-player or multiplayer third-person shooter gameplay. Notably, in the game's multiplayer mode, game levels are generated based on a player's real-life GPS coordinates. The game stores its audio files in a set of ISA archives, which group related audio together.
How to open an ISA file
You can use the isa.py Python script (linked below) to extract the WAV files an ISA file contains.