Conceptis Ltd.

MultiSudoku: Samurai Puzzles

Pic-a-Pix: Nonogram Color

Dot-a-Pix: Connect the Dots

Nurikabe: Islands & Walls

SumSudoku: Killer Sudoku

Hashi: Bridges

Slitherlink: Loop the Snake

Link-a-Pix: Nonogram Links

Fill-a-Pix: Minesweeper Puzzle

Tic-Tac-Logic: X or O?