StepMania
Advanced rhythm game for Windows, Linux and OS X
StepMania is an advanced cross-platform rhythm game for home and arcade use. StepMania 5.1 focuses primarily on internal enhancements, especially for content creators (including but not limited to controller support improvements, support for custom songs in profiles on USB drives, fullscreen improvements on X11, a large number of new modifier effects, and a new image caching system), while preserving compatibility with StepMania 5.0.x content such as themes and noteskins. Speaking of themes...