64		x15 (Windows, 2001)
45		Cubes 2.0 (Windows, 2000)
43		2D 3D Puzzle Flowers No1 (Windows, 2002)
41		The Nicktoons Memory Challenge (Windows, 1996)
40		Cogs (Windows, 2009)

Notes: Games similar to 15 Puzzle, Games like 15 Puzzle, Windows, Puzzle, Turn-based, 1st-person, Sliding block, tile puzzle, PC, Game Similarities.