Vortex Warp

Vortex Warp is a game published by Dimension Games. It is rated E10+. It is playable on the 3DS.

Plot
A vortex has pulled Earth into itself, and nobody can escape. But oddly, The vortex has made Earth travel through time. You, a Mii, must collect all 20 "Time Pieces" to escape and destroy the vortex.

Trivia

 * There is a hidden 21th Time Piece that can only be unlocked if you have all 20 Time Pieces and all 100 medals. When you get the 21th Time Piece, you unlock everything.