Embark on a journey to fill Picross grids across the globe, learning about the Seven Wonders of the Ancient World as you go. To complete a Picross grid, you must use the number clues above and to the left of the board to fill in and wipe clean squares on the grid. World Riddles: Seven Wonders breaks up the logic puzzles with picture completion challenges, hidden object scenes and other small diversions. Try the free trial version or download the full, unlimited version today!