From Bulbapedia, the community-driven Pokémon encyclopedia.
Watch Out! (Japanese: がまんだソーナンス! Endure Sonans!) is the name of a Pokémon-based e-Reader application. It is a mini-game starring Wobbuffet. Four cards are required to play the Watch Out! application: Alakazam, Wobbuffet, Dunsparce and Murkrow.
In Watch Out!, the player takes on the role of a Wobbuffet standing in a field. Wobbuffet must use Counter to reflect attacks from boulders and Mirror Coat to reflect attacks from electric sparks. If Wobbuffet uses the wrong move or fails to use a counterattack in time, it will lose a life. The game ends when Wobbuffet has lost three lives.