The object is to shoot as much fowls as possible. Smaller fowls brings you more points. I'm sure most of you played some game from Moorhuhn series.

The Super Monkey Ball series moves from puzzler to platformer with Sega and Traveler’s Tales Super Monkey Ball Adventure for the PS2. While the monkeys are still zany and fun and puzzles are still in abundance, the game adds new features and abilities while tying the whole thing together with a fun, interesting story.
Adicting Funny Games