Long Claw of the Law

Long Claw of the Law (alternately, The Long Claw of the Law) is a 4-player mini-game from Mario Party 4. Play starts with each character controlling an extendable claw. A "Wanted!" poster is seen, which a picture of one of the following: Goomba, Bob-omb, Chomp, Boo, Thwomp, or Shy Guy. Players must use their claw to grab three of the type of enemy seen on the Wanted! poster, who are hiding in various windows throughout the setting. The windows will open and close, so players will need to time their grab. Although player need only capture one type of enemy, all four appear in the game. If the player attempts to grab the wrong type of enemy, the window will slam shut immediately. The first player to grab three of the right enemy wins.

Controls
Control Stick - Move crosshair up and down. L button - Move crosshair one window to the left. R button - Move crosshair one window to the right. A button - Grab enemy.

Boo was not a playable character at this point in the Mario Party series, which explains how he is a potential "Wanted!" enemy.