StepMania 5.1 represents a massive leap forward for the open-source rhythm game community. While the engine provides the core mechanics for reading arrows and calculating scores, the user interface defines how you interact with the game.
There are several resources available for finding and downloading StepMania 5.1 themes: stepmania 5.1 themes
Many themes are actively updated by the community on forums like Zenius-i-Vanisher , so check for new versions to get the latest fixes. StepMania 5