20-Point Star

A 20-Point Star (originally parsed as 20 Point Star) is a Special Item that a Yoshi can collect in Super Mario World 2: Yoshi's Island and its reissue, Yoshi's Island: Super Mario Advance 3. It can be obtained by winning certain minigames, or Mini Battles. It is worth 20 Stars, giving him 20 more seconds for the Countdown Timer. There is a similar Special Item called a 10-Point Star.

Super Mario World 2: Yoshi's Island

 * Instruction Booklet description: Increases the Countdown Timer by 20.

Yoshi's Island: Super Mario Advance 3

 * Nintendo 3DS Digital Manual description: Increases your star power by 20.

Trivia

 * Like regular Stars and the 10 Point Star, the 20 Point Star was originally represented by a clock in prototype builds of Super Mario World 2: Yoshi's Island, and additionally replenished 50 to the Countdown Timer instead of 20.