AlterJig is a tile jigsaw puzzle game. You select graphics supplied with the game or create your own puzzles from any bitmaps. When you start the game, it scrambles the puzzle and challenges you to restore the picture by rotating groups of four tiles to get the tiles back to their proper position. Tile rotation is controlled by left and right mouse buttons. It sounds easier to solve than it is.

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This is a set of challenging logic games and puzzles. The objective is to arrange the tiles in the center of the board to match the ones displayed along the game-area border. The games are harder than they look because you must get the icons aligned without disrupting your previous work. It also includes a visual puzzle builder for creating your own games with various board sizes and controls.