some cheats to play around with:
play as gargos:
At the character selection screen, hold Up and press Fierce Punch, Medium Punch, Medium Kick, Fierce Kick, Medium Punch, Quick Punch, Quick Kick and then Medium Kick. You will hear a sound and Gargos will appear as a selectable character.
random select:
Press Up and Start on the character selection screen for Random Select.
game speed:
On the character selection screen you can choose the speed of the game with various codes. They must be done before choosing your character. Down and any medium attack for turbo mode, Down and any fierce attack for ultra turbo and Down and either quick attack to go back to regular speed.
i think that using ultra speed is almost fullspeed, but the 3d stages are in "normal" ultra speed then. so just change the speed to regular, and in the next rendered stage switch to ultra again. its much more playable this way i think. i love this port so much ;-)