Domino Solitaire, DomiSol is a puzzle where 28 dominoes are placed to form a rectangle but you do not see the bounds. Your goal is to find the bounds by grouping the domino halves into a correct domino set. A logic challenge. Free, no installation.
Tangram is an old Chinese game of shapes. It consists of seven pieces, called tans. The objective is to form a specific shape with seven pieces. The shape has to contain all the pieces, which may not overlap.