Marcel Gillen

Hexomino Pyramids
Hexominoes Challenges
I Love Puzzles
Ich bin ein Bärliner
IPP Burr Puzzle
Power Flower
Samurai
San Diego Puzzle
Six Piece Cylindrical Burr
Smiley Burr
Soccer Ball Puzzle
Tetrahex-Twinform
The Pentagon Tiles
Torii Puzzle
Triangle & Square & Pentagon
Triangle Puzzle
Triple Pyramid
Twin Board Burr