When Roby steps onto a Yellow tile, it turns left, when it steps onto a Red tile, it turns right, when it steps onto a Grey tile, it goes straight on. Press R to reset the grid, press S to shuffle the tiles. Click on the three tiles to the left to select a color, and then click on the tiles you want to turn of that color. Click on a letter to chose starting point for Roby. Press SPACE to make Roby move across the grid.
