The "Sound Load" feature on Bangai-O Spirits will allow users to share custom levels, high scores, and replay videos as sound. Sound. When the mode is active, the selected data is converted into an audio track, which is played through the speaker of one DS, and can be intercepted by the microphone of another, where it is read and turned back into game data. The sound files can even be uploaded to computer, for easy sharing of content over the internet. We're as amazed as you are.
Bangai-O Spirits will also feature competitive and co-op multiplayer for 1-4 players through local wireless. For more information on the game, do check out DS Fanboy's colorful overview. We've also appended a gallery of new screenshots (which don't quite capture the game's hectic and explosive gameplay).