From GameBrew - a wiki dedicated to Video Game Homebrew.
PYIN-PYANG is a Yin-Yang Pong for the Nintendo DS. It is a 2 players game (no player-vs-computer mode) and does not use WiFi.
It has the same rules as tennis table and you are able to move platform to 4 directions without crossing to the opposite field. The rules are explained at the Help section of the homebrew.
D-Pad - Move white racket (Player 1)
A/B/X/Y - Move black racket (Player 2)
- First release available the 26th of October, 2007.