Sonic Boom is Guile's projectile attack in Street Fighter II, the Capcom arcade fighting game first released in 1991 and later ported to home consoles. Players perform it by charging backward and then pressing forward with a punch, sending a spinning blade of energy across the screen. The move, and its sharp sound, became a staple of arcade play, tournaments and later online clips, where fans reuse the short burst to signal a Guile counter or a decisive hit. Its brevity and recognisability keep it useful for fast edits decades later.