Default Controls
← → ↑ ↓ = Directions
A = z
B = x
X = a
Y = s
C (Top-Left Shoulder) = q
Z (Top-Right Shoulder) = e
L2 (Bottom-Right Shoulder) = r
R2 (Bottom-Right Shoulder) = t
Mode = Right Shift
Start = Enter
About the Greatest Heavyweights (USA) SEGA Genesis Online Game
Hey there! If you’re a fan of boxing games, you’re in luck! You can now play the Sega Genesis game Greatest Heavyweights (USA) online in your browser for free. Step into the ring and face off against some of the greatest heavyweight boxers of all time. Get ready to throw punches, dodge jabs, and knock out your opponents to become the ultimate champion. Simply click the play button and start your boxing journey right away. Enjoy the thrill of the fight without any downloads or installations. Let’s get ready to rumble!
