O PC, Arrow keys = move, J = puch, I = kick, K = jump, L = block.
O Mobile, Drag the move wheel, Tap the buttos to attack or defed.

Travel back in time with Retro Street Fighter, a side-scrolling fighting game that will make you feel nostalgic. This game features 2D-pixel art that gives it a classic look. You will fight your way through multiple levels, facing different enemies and showing off your skills. You can choose from seven levels of difficulty and challenge yourself. You will also have various moves to use in combat, such as punches, kicks, and blocks. But be careful, some enemies are tough and dangerous.

For iOS:
Safari on iOS 8 and later supports WebGL 1.0, and on iOS 15 and later supports WebGL 2.0.

For Android：
Nearly all of them support WebGL