Conceptis
Conceptis Tic-Tac-Logic
FreeEngaging Puzzle Game for Logic Enthusiasts
iOSConceptis Slitherlink
FreeEngaging Logic Puzzle Game for iPhone
iOSConceptis Fill-a-Pix
FreeConceptis Fill-a-Pix: A Unique Puzzle Game
iOSConceptis Link-a-Pix
FreeEngaging Puzzle Game for Logic Enthusiasts
iOSConceptis Fill-a-Pix
FreeExplore Hidden Images with Conceptis Fill-a-Pix
Android
B&W Pic-a-Pix Light Vol.1
FreeConceptis Puzzles: Pixel Art Creation Made Fun
Windows
Mix Sudoku Light Vol.1
FreeConceptis Sudoku Variants: A Fresh Take
WindowsConceptis Sudoku
FreeEngaging Sudoku Variations for iPhone
iOS