checked-no see also SONIC & KNUCKLES (vc-gen) =>Demo Control: When the game is playing through demo levels, you can press <A>+<B>+<C> to make Sonic act oddly. =>Stage Select & Sound Test: On the title screen and before the demo plays, press U D L R and a chime will sound. Hold <A> and press <START> and a stage select and sound test will appear. =>Easy Chaos Emeralds: After you enter the stage select code, enter the special stage and collect a chaos emerald. Reset the game (use the Reset option in the home menu) then use the stage select to return and grab another emerald. Repeat until you have them all. =>Debug Mode: On the title screen, when Sonic shakes his finger, press U <C> D <C> L <C> R and a chime will sound. While playing the game, you can pause and press <A> to reset the game, <B> to turn on slow motion, or <C> to advance the game one frame at a time. =>Stage Editor Mode: Enter the Debug Mode code and start the game. When a zone name appears on the screen, hold <A> and don't release it until Sonic appears. If done correctly, hex numbers will appear in the score spot and the timer will be frozen. You can now toggle editor mode with <B>, press <A> to change sprites, and press <C> to place the sprite in the level.