Imagine a Nintendo DS game where you don’t use the buttons, and you don’t use the touch-screen. The game is played with the microphone alone.
Each player assumes the role of a superhero (think Mighty Morphin Power Rangers) who fights on a team. To fight, the player must shout the name of the attack. Group attacks can be unleashed when everyone in the group shouts the same attack, at the same time.
How completely weird and cool! There is a video on THIS site so you can check it out.