Shredder's Revenge is a clear cut example of how to do an arcade style beat 'em up right. You've got fantastic music, colorful visuals that pull you into the world of the turtles, and a solid length of about two hours. The most important factor though is the gameplay, which is smooth to control and fun to play, avoiding most of the issues that plague other side scrolling beat 'em ups for one of the best experiences I've had with this particular genre of game.