It's amazing how they managed to put a classic 2D-shooting game onto a stereoscopic 3D console. You can play it in 2D or in 3D. I tried playing Space Invaders in Original 2D first, and it was the good ol' Space Invaders I could play. I then tried doing Virtual 3D to play Space Invaders Part II, but the emulator I was using made it more trippy. I was going to record gameplay of the challenge modes, but I was already tripped enough I didn't want to do it anymore. The challenge modes are a Time Attack and a Score Attack, all played in Virtual 3D mode.