Fillogic

Fillogic is a puzzle game in which squares in a grid must be marked black or white according to clues given around the outside of the grid. This simple mechanic leads to a compelling test of logical ability that has kept players interested in nonogram puzzles for more than two decades. Fillogic features custom puzzle generation and solving algorithms that teach players how to tackle even the toughest puzzles while ensuring that they never run out of new grids to solve.