Super Street Fighter II Turbo, known in Japan as Super Street Fighter II X - Grand Master Challenge (スーパーストリートファイターⅡX Sūpā Sutorīto Faitā Tsū Ekusu?), was released in March 1994. The main new feature in Super Turbo is the ability to perform a new type of special move called "Super Combos", with one available for each character. A Super Combo is a special move, usually a more powerful version of a character's standard special move, that can only be performed by filling out the Super Combo gauge. The Super Combo gauge is filled as the player performs regular and special moves against their opponent, which will be emptied again once a Super Combo is performed. When an opponent is defeated with a Super Combo, the background will flash yellow and red. Other additional features are added to the gameplay in Super Turbo such the ability to "juggle" or perform a combo against an opponent falling in the air. This can be done by connecting an air combo-capable attack with another air combo attack or with a Super Combo (and vice versa). The player can also escape from a throwing or holding attack and make a safe fall, reducing the damage from the attack.