OOG: The Object Orientation Game

This is a computer version of Tangram. Tangram is an ancient Chinese puzzle
with just a few geometric shapes (to be exact, one square, one parallelogram
and five triangles of varied sizes). Move and rotate these pieces to build a
goal shape (squares, polygons, profiles,…). The program has dozens of pre-
made goals, but you can create and save your own. If you are stuck, the
program can help you by placing a piece of your choice in the correct
position.

The program also includes other shapes for the pieces (pentominoes,
polyominoes and hexagons), and separated statistics for different players.