Project OutFox is a multi-moded rhythm game based on the StepMania engine that includes different game styles and effects to add new features to charts, themes and noteskins. It provides compatibility with previous StepMania 5.1/5.0 content, including charts from StepMania 3.9, and older Dance With Intensity Content, BMS/PMS, piu, para etc charts

It features new simulation modes and options not previously available in older StepMania versions released to date, focusing on modernizing the engine to improve performance, graphical fidelity, and to refurbish parts of the game that have been neglected since 2007.