Roller Coasters

Roller Coasters is a 4-player and duel minigame coming from Mario Party DS. The characters have to ride upon a ball and make it to the finish line, in a chaotic obstacle track.

Setting
The game takes place in a sandbox pit, which features a wide assortment of obstacles such as building blocks, buckets n' spades, and even moving toy vehicles. At the other end, there is a finished sand castle behind the finish line awaiting the winner.

Gameplay
Each character rides upon a ball across the sand track, whilst steering clear of the obstacles. Slide the stylus upwards to the push the character's ball forwards and keep doing so repeatedly to gain a gradual momentum in the ball's speed as it slides over the sand.

Steer clear of the various obstacles scattered throughout the pit - colliding with them will bring your ball to a complete halt and loss of momentum, or even push away your ball backwards.

Trivia

 * The minigame has actually nothing to do with amusement rollercoasters, despite its deceiving name. The 'roller' part of the name is meant to evoke the balls rolling across the sand.