Street Fighter II: The World Warrior - Cheat

Same fighter match:
Pause game play in two player mode and type 7kids. The border will flash to confirm correct code entry. Quit the current match and restart the game in two player mode to get the ability for both players to select the same character.

Invincibility:
Start a one player game, highlight Blanka at the character selection screen, and slowly type patience. The border will flash yellow to confirm correct code entry. Select a fighter and press [F10] during the match to restore your energy. 