StepMania AMX

Stepmania AMX (or SMA for short) is an unofficial fork of StepMania 3.9+ with more features, many focused on Pump It Up simulation. “AMX” is short for Aldonio_MX, the creator of this fork.

Some of the new features include: To focus on hobbyist users, SMA removes support for coin mode, unlike Stepmania 5.
 * advanced chart controls like in SM5's SSC files, such as split timing, tick count, PIU's earthworm sections, and fake sections
 * Co-Op mode with up to 5 distinct players
 * smaller note quantizations up to 768th notes (For reference, Stepmania 5 supports up to 192nd notes.)
 * .MP4, .WEBM, and .MOV files as background videos
 * potion notes (only partially working)
 * PIU-style lifebar by default on every game mode
 * touch controls
 * support for Andamiro-official .UCS files, Kick It Up charts, and DirectMove charts