Snow Machine Fight
From the Super Mario Wiki
Snow Machine Fight is a dream event in the DS version of Mario & Sonic at the Olympic Winter Games. A similar sport in the Wii one is Dream Snowball Fight. In this sport, the characters ride around in a tractor-like vehicle. The goal is to defeat the most characters. The character who shoots the snowball which depletes the hit character's HP completely gets the point. When a character is defeated, they get back up. To throw snowballs the player must use and charge by holding , and release it when ready to shoot. Collect hearts to regain health, and collect the lucky feather to increase speed and receive two points when a character is defeated. When a character with a lucky feather is defeated, they will drop it. If the player has a Battle Snow Machine then it is much easier to beat. The Battle Snow Machine can only be gained in Adventure Tour Mode with Mario or Sonic the Hedgehog.