From GameBrew - a wiki dedicated to Video Game Homebrew.
Tetravex for DS. It's a puzzle game where you try to match the numbered edges of the tiles with the edges of the other tiles.
- Dimensions of board can be 2x2, 3x3, 4x4, 5x5, or 6x6
- Move all tiles on the solution board at the same time using the D-Pad
- Tiles are coloured as well as numbered
Move all the tiles from the bottom screen to the top screen to win. Player can only place a tile on the top screen grid if the numbers on the tile match up to the numbers on the tiles next to it (unless there are no tiles.)
A border around the tile will tell if it is allowed to place the tile: red for not allowed, while green is okay to move.
Player can only acquire hint before starting to place tiles.
Stylus - move tile
L/R - switch top and bottom screen
D-pad - move all the tiles on the top screen at once
A - start new game
X - start new game with larger board size (6x6)
Y - start new game with smaller board size (2x2)
B - get hint