The Hadouken debuted as a special move in Capcom's Street Fighter series, performed by Ryu and Ken by launching a surge of energy from their hands while shouting the attack name. It became widely recognised with Street Fighter II in the early 1990s, when the move and its voice call entered arcade culture. Clips of the shout later spread through fighting game videos, parodies and soundboards, where the single word now signals a projectile attack even outside the game itself.