Throughout the fights in the game, there is a special RUMBLE meter which fills up, one or two letters at a time, until the word "RUMBLE" is spelled at the bottom of the screen. Letters can be obtained by successfully landing hard blows; most such actions will yield one letter, though some particularly strong punches may yield more. Once the meter is full, the player can power himself up, enabling access to a special combo called "Rumble Flurry", activated by pressing a button combination. Each character's "flurry" is unique to them, and consists of a series of punches which does a large amount of damage if landed successfully. One unique graphic feature of the game is the gradual bruises gained by players as the fight progresses (like hematomas and swellings), present in all fifth-generation versions. While this is not necessarily a new feature to games, it garnered much appraisal from reviewers, because of the added fun factor this element supply to the game.