Where can i submit PAR codes that i've "discovered" recently? Also for those who want to know how to play Zaxxon 3-D in in 2-D mode here's all you have to do: 1. insert the Zaxxon 3-D cart in to the Power Base console. 2. press the "Pause" button at the game's title Screen there you will see aonther screen with a gray or siver background. 3. Use the D-Pad on the Sega Mark III/Power Base controller to choose 2-D mode and your spaceship flight control and press button "1" on your controller and start playing in 2-D. This "cheat" if you will works on Mark III/Master System emulators as well. I discovered this "cheat" when i paused the game to help someone i knew.