When you fight Shang Tsung at the end of the game, sometimes when he gets near the edge of the stage, his pixels will mess up and it's clear the gaming hardware is glitching. This is the Sega version.
When you fight Goro in the second to last stage, he will sometimes fire his projectile and it won't fire, and he will just simply have one of his arms sticking out, it's quite easy to spot. This is the Sega version.
When you select Sonya Blade for the "Test Your Might" stage for the Sega Genesis, her grunt is a man's grunt.
One of the key aspects of Raydens character is that in the original game, is he is a god who basically enters the tournament for kicks, just to defeat Shang Tsung. So why enter the tournament at all??? If he didn't care about Earth's future, then just let the earth warriors get killed or kill each other. He could have just let the tournament play out, and lead to it's eventual conclusion, and let the villains win.