Project OutFox is a fully extensible, cross-platform rhythm game sim engine based on StepMania, featuring 21 different modes simulating different dance, instrument, and key-based rhythm games.

Its goal is to become a cross-platform “sandbox” and “working museum” for the genre, supporting nearly 25 years worth of content. It is developed by a team of community volunteers creating a game for the fans by the fans. The aim is to be community focussed and to celebrate what rhythm games have done to the world, providing an archive for future generations of players.

It has extensive chart format support across different simulated game modes;

Dance Pad Based Modes

dance (3k, 3k double, 4k, 4k double, 6k, 6k double) .dwi, .sm, .ssc, .bms - The default game type. This game type uses four lanes in the cardinal directions (left, down, up, right). It also contains a 6-lane style, adding up-left and up-right directions, and a 3-lane style using only up-left, down, and up-right.

groove (4k, 4k double) .ssc, - The default game type with mods and gimmick support. This game type uses four lanes in the cardinal directions (left, down, up, right). It features support for extended modifiers, shaders and special effects to create whacky and exciting files to test your friends!

pump (5k, 5k double, 6k (halfdouble) .ksf, .sma, .sm, .ssc - A five-lane dance game, which uses four diagonal directions and the center rather than cardinal directions.

techno (4k, 4k double, 5k, 5k double, 8k, 8k double, 9k, 9k double) .sm, .ssc - A dance game type designed for pads with nine panels, including 4-lane (similar to dance), 5-lane (similar to pump), 8-lane (using all but the center panel), and 9-lane styles in single and double versions.

smx (3k, 3k double, 5k, 5k double) .ssc - A dance game type designed by StepRevolution using a new unique pad which uses the cardinal directions plus middle (left, down, up, right and centre).

ds3ddx (4k + 4 sensor, 5k + 5 sensor) .ssc - A dance game whose format is common among Chinese arcade dance games, which uses four diagonal foot panels, and four hand sensors around the pad in the cardinal directions. The game also supports the 5k variant that allows full interoperability with the different revisions of arcade versions.

stepstage (6k, 3k) .ssc - A dance game whose format is familiar to those that played it; it had 6 panels over 2 columns, based on a circular design.

kickbox (4k, 6k, 8k) .sm, .ssc - An obscure lash-a-soft dance pad-to-a-punching-bag mode (four, six, and eight-pad modes).

Sensor Based Modes

para (5 sensor, 8 sensor) .sm, .ssc - A dance game designed for para para routines, which is typically played with five infrared hand sensors in a semicircular layout, and uses a considerably looser scoring system.

ez2dancer (3k + 4 sensor) .sm, .ssc - A game type based on the defunct arcade dance game EZ2Dancer, which uses three foot panels and a pair of hand sensors.

maniax (4 sensor) .sm, .ssc - A game type based on the defunct arcade dance game Dance Maniax, which uses four hand sensors arranged into two columns (upper and lower).

boxing (2 sensor) .ssc - A game type based on boxing moves to give you a great workout!

Controller Based Modes

be-mu (5k +scratch, 5k +scratch double, 5k +foot pedal +scratch, 7k +scratch, 7k +scratch double) .bms, .bml, .bme - Supports 5-key and 7-key styles, along with foot pedal support.

po-mu (3k, 4k, 5k, 7k, 9k, 18k (9k double)) .pms, .bme - A PMS player mode, supporting 3, 4, 5, 7, and 9-button styles, 2 player mode, and the ability to load PMS/BME po-mu files.

kbx (1k to 19k) .bms, .bml, .bme .chart, .dwi, .dtx, .gda, .ksf, .mc, .mid, .osu, .osz, .pms, .qua, .qp, .sma, .sm, .ssc, .tja - A 1 to 19 lane game type designed primarily for keyboard play, being able to play songs from any mode using the smartGen system. This is an OutFox-specific game type that does not simulate any specific game.

Instrument Based Modes

gddm (6k, 9k, 10k) .dtx, .gda, .g2a - A drum mode supporting six-part (five drums and one pedal), nine-part (seven drums, bass pedal, hi-hat pedal), and 10-part (“Real”) styles, played with MIDI electronic drum kits.

gdgf (3fret, 5fret) .dtx, .gda - A guitar mode supporting three-fret and five-fret styles, often played with a guitar style controller.

gh (5fret, 6fret) .chart, .mid - A five-fret guitar mode simulating the mechanics of once-popular console games originating from North America.

rb (rb drums, gh drums, rb pro drums) .chart, .mid - A drum mode simulating the mechanics of once-popular console games originating from North America.

taiko (1 drum - 4 hitpoints) .osu, .osz, .tja - A popular game often played with a drum controller.

bongo (2 bongos - 4 hitpoints + clap) .tja - A popular game often played with a bongo drum controller.

Experience a new feature rich editor allowing for new charting experiences, whether you want to create standard charts or something more exotic to outfox your friends, it can all be done with a new online mode, pitting your skills against others around the world, or just to claim bragging rights on the new leader boards!

Featuring keyboard, control pad, midi instrument, controller, dance mat, touch support, and full controller support for SteamDeck, there is an extensive way to play your way, and with the included mods and gimmick options the possibilities are almost endless!