UtopicSense is an audio-reactive particle visualization tool for 2D games. It is currently suitable for 2D game developers, due the 2D particle effects (in the future it will have 3D particles as well). It works for any 2D games that use individual audio sources for game objects of prefabs. Developers can customize 5 different effects using the tool's interface. It is intended to have more synesthesic functionalities as development goes.
The provided videos are just sample personal projects and the tool should be used on your own project.