The characters can still change back and forth, and unlocked characters remain open for story mode and gallery mode. The game's unique unlock system allows only one version of each character (either heel or face) to be unlocked for exhibition matches at any time. Vows are specific things the player must complete during matches, such as not using weapons, using a Killer Move, or winning the match within a certain time limit. Alternate forms of each character are unlocked through the Vow System. Three of them, however (Bloody Shadow, Candy Cane, and Evil Rose), start as the heel or evil side. Most characters start as a face, or good side. Each character has an alternate side, bringing the total character count up to 22. Rumble Roses features a heel/face system derived from real-life professional wrestling. There is also a story mode and an option to allow two computer controlled girls to 'duke it out while you watch.' Each character is claimed to contain 10,000 polygons, a record number for the PlayStation 2. There are regular matches and mud wrestling matches. Rumble Roses features an all female cast.