Giant Snowball Slalom
From the Super Mario Wiki
Giant Snowball Slalom is one of Wario's minigames in Super Mario 64 DS. This game is a harder version of Snowball Slalom. As before, the player must use the Stylus to roll the Headless Snowman to the finish line. The snowman increases in size and speed as it is rolled farther. Hitting rocks or penguins causes the snowman to stop and decrease in size. Reaching the finish line within the time limit of forty seconds wins the game.
 In-Game Instructions
Roll the snowball over a longer course! As before, avoid rocks because they'll slow the player down.