- Amazons*, 1994
- Arc Angles, 2005
- Archimedes' Square, 2003
- Bear Hugs, 2000
- Bear Hugs Jr., 2001
- Boats, 2003
- Brace, 1996
- Collidescape, 1994
- Colormaze (original), 1984
- Colormaze (Flying Colors), 2001
- Color Up*, 2001
- Combinatorix, 1989
- Combinatorix Jr., 2006
- Cube Brick*, 2001
- Cubits, 1999
- Dazzle, 2008
- Deka-Mosaik, 1995
- Deka-Star, 1994
- Dezign-8, 2000
- Diamond Rainbow, 1996
- Diamond Star, 2007
- Doris, 2008
- Dual Quintachex, 1994
- End Point, 2000
- Fill-Agree, 1996
- Four on a Match, 2003
- Fox Blox, 2007
- Fractured Fives, 1986 (cardboard), 1996 (paper)
- Friedman meta-dissections, 2003
- Friedman's Rolling-Block Maze, 2002
- Gallop, acrylic, 1991; wood, 1998
- Gallop, Sidle supplement, 2001
- Game of the Goose**
Game of the Labyrinth,
wood, 1987; canvas, 1994
- Game of Solomon, 1985
- Game of Y, 1993
- Gemstones, 2007
- Grand Roundominoes, 1997
- Grand Snowflake, 1999
- Grand Tans, in tray,1982; in bag, 1987
- Heptominoes**, 1986
- Hexacube, 1986
- Hexmozaix Jr.,1992
- Hexmozaix , 1987
- Hexmozaix II, 1988
- Hexmozaix gallery, 1989
- Hexnut Jr., 1995
- Hexnut, 1987
- Hexnut II, 1996
- Iamond Hex, 1998
- Iamond Ring, 1987
- Icosa-Triad, 1988
- Imago*, 1997
- Intarsia, 2008
- Kaliko, 1991
- Kite-Mosaik, 1997
- La Ora Stelo, 2008
- Leap, wood, 1982
- Leap, vinyl, 1987
- Leaves, 2003
- Lemma, 1985
- Lewis Carroll Wordgame, 1991
- Logo Puzzle, 2000
- Logo Puzzle 25, 2005
- Manoover, 2007
- Manoover Plus, 2008
- Marshall Squares, 2006
- Memory Bank*, 1983-86; 2008-9
- Mini-Iamond Ring, 1996
- MiniMatch, 2002
- More or Less, 2003
- Multimatch I, cardboard, 1982;
acrylic, 1989
- Multimatch II, 1989
- Multimatch III, 1989
- Multimatch IV, 1990
- MultiTouch I, 2001
- MultiTouch II, 2001
- MultiTouch III, 2001
- MultiTouch IV, 2001
- Nine Men's Morris/Fox and Geese**, 1997
- Octiamond Ring, 1997
- Octiles, 1984
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- Octominoes**, 1989
- Oskar's Disks, acrylic, 1991/2001;
wood, 1993
- Overpass, 2001
- Pearl Fisher, 2008
- Penrose Diamonds, 1994
- Pen. Kites&Darts, 1994, 2004
- Pentarose, 1996
- Pentomino puzzle necklace, 1985
- Pocket Loops, 2006
- Pocket Loops 3, 2008
- Pocket Pentominoes, 2005
- Pocket Pseudo-Coup, 2006
- Pocket Quintachex, 2006
- Pocket Rhombs, 2005
- Pocket Star, 2005
- Pocket Tetrapentos, 2007
- Pocket Vees, 2006; 2007
- Poly-4, 1985 (supplement to Quintillions)
- Poly-5, 1986
- Polyarcs*, 1990
- Poly-Spidrons*, 2006
- Power of Two, 1998
- Proteus, wood, 1982; vinyl, 1987
- Pseudo-Coup, custom, 2005; full, 2006
- Puzzling Pentagon, 1995
- Pyramid, Giant*, 1986
- Pyramid, Perplexing*, 1986
- Quadrants, 1993
- Quantum*, 1985
- Quintachex, diecut, 1982/1985;
acrylic, 1990
- Quintapaths, 1999
- Quintillions, 1980
- Quintillions Turntable, 1981
- Rainbow Rombix, 1994
- Renaissance playing cards**, 1987
- Rhom-Antics, 1994
- Rhombiominoes, 1990
- Rhominoes, 2006
- RhombStar-7, 1998
- Rombix, 1992
- Rombix Jr., 1995
- Rombix Rusticana, 1993
- Rory's Story Cubes, 2005-2007
- Roundominoes, diecut, 1982;
acrylic, 1983
- Scoozie*, 1987
- Sextillions, 1984
- Sextillions Rusticana, 1993
- Shadow Play, 1990
- Six Disks, 2003
- Six-by-Six, 2006
- Snowflake Square, 1997
- Snowflake Super Square, 1985
- Snowflake Super Square Rusticana, 1993
- *Star, 2004
- StarSlide, 2006
- Stelo, 2007
- Super Quintillions, 1982
- Super Deluxe Quintillions, 1989
- Super Roundominoes, 1986
- Super Roundominoes Rusticana, 1993
- Tan Tricks I, 1988
- Tan Tricks II, 1988
- Tan Tricks III, 1990
- Teleporters, 2004
- Ten-Yen, 2003
- Tetrapentos*, 2006
- Throw A Fit, plastic, 1991;
wood, 1995; jumbo, 2005
- Tiny Tans, wood, 1984; acrylic, 1989
- Transpose, wood, 1995;
acrylic, 1996
- Triangoes, 1987
- Triangoes Jr., 1987
- Triangule-8, 1993
- Trifolia, 1990
- Trifolia Rusticana, 1993
- Tri-Jazz, 1999
- Tulips, 2008
- Vee-21, 2003
- Void,wood, 1982; vinyl, 1987
- Warp-30, 1988
- WhirlSpools, 2006
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