66		Zen of Sudoku (Windows, 2006)
65		Su Doku Classic 2 (Windows, 2006)
64		EIPC Free SuDoKu 3 (Windows, 2007)
64		The Sudoku Challenge! (Windows, 2005)
54		Sudoku: Addict Deluxe (Windows, 2005)
54		Puzzler Sudoku: Volume 1 (Windows, 2005)
45		Ka Kuro Master (Windows, 2006)
45		Buku Kakuro (Windows, 2006)
45		Kakuro (Windows, 2006)
45		3 Balls (Windows, 2006)
45		Kakuro 60.000 (Windows, 2006)
45		Tiny Worlds (Windows, 2006)
45		Masyu (Windows, 2006)
45		Deflektor X4 (Windows, 2006)
45		Tangle Bee (Windows, 2006)
45		CubeDrift (Windows, 2006)
45		Magic Pearls (Windows, 2006)
45		Kakuro XXL (Windows, 2006)
44		Gemsweeper (Windows, 2007)
44		Pathstorm (Windows, 2007)
44		WiseBall (Windows, 2007)
44		Sokoban (DOS, 2007)
44		Gasparilla: Quest for the Key (Windows, 2007)
44		Map (Windows, 2005)
44		Untangle (Windows, 2005)
44		GEOM (Windows, 2005)
44		Elven Mists (Windows, 2007)
44		Inertia (Windows, 2005)
44		Shellblast (Windows, 2007)
44		Mines (Windows, 2005)
44		Lights (Windows, 2005)
43		2002 Pentamino Puzzles (Windows, 2008)
43		Red Spheres (Windows, 2008)
43		Quell (Windows, 2015)
43		The Misadventures of Sir Randolph Doogleberry, British Explorer (Windows, 2004)
43		Fiber Tree (Windows, 2004)
43		Engare (Windows, 2017)
43		SpaceChem (Windows, 2011)
42		Lightspeed (Windows, 2003)
42		Electronica (Windows, 2003)
42		Reckon (Windows, 2003)
42		eMazing Mazes (Windows, 2003)
42		RotaPicture (Windows, 2003)
42		Q-lympics IQ-marathon (Windows, 2003)
42		LineWay (Windows, 2017)
42		Manic Minefields (Windows, 2003)
42		BoxWorld (Windows, 2009)
42		BoxWorld 2 (Windows, 2009)
42		World Riddles: Animals (Windows, 2009)
42		Ziro (Windows, 2009)
42		Spintensity (Windows, 2003)
42		Strata (Windows, 2013)
42		Sigils of Elohim (Windows, 2014)
42		QuadroX-2 (Windows, 2003)
42		Funny Creatures (Windows, 2003)
41		Abysma (Windows, 2002)
41		Molefest (Windows, 2002)
41		Critical Seeker (Windows, 2002)
41		Chromatron (Windows, 2002)
41		Kakuro Guru (Windows, 2010)
41		Animals of Africa (Windows, 2002)
41		Molefest (DOS, 2002)
41		Block Manouveres (Windows, 2002)
41		Slyder (Windows, 2002)
41		Soko-Ban (DOS, 1987)
41		Archibald's Ice Cubes (Windows, 2002)
40		Zig Zag Flag Shag (DOS, 1991)
40		3x Logic Games (DOS, 1993)
40		Bolo Adventures II (DOS, 1991)
40		The Quest of Kwirk's Castle (DOS, 1991)
40		The Power (DOS, 1991)
40		Krymini (DOS, 1991)
40		DOSMINE (DOS, 1993)
40		Revelation (DOS, 1992)
40		Alpha Man (DOS, 1992)
40		Hero's Heart (DOS, 1992)
40		Bolo Adventures I (DOS, 1992)
40		Oxyd (DOS, 1992)
40		Orbox C (Windows, 2016)
40		The Brainies (DOS, 1992)
40		Balloon Challenge (DOS, 1993)
40		Gear Works (DOS, 1993)
40		15 x 15 (DOS, 1996)
40		Oik: Memory (Windows, 2017)
40		Algorithm (Windows, 2017)
40		Invisibox (Windows, 2017)
40		Landmine (Windows, 1995)
40		Minesweep (Windows, 2018)
40		Summer: Jigsaw Puzzles (Windows, 2018)
40		Baroll (DOS, 2001)
40		16 (DOS, 1996)
40		Covering (DOS, 1992)
40		Lasermania (DOS, 1996)
40		Shiftrix (DOS, 1991)
40		Laser Light (DOS, 1994)
40		Elements (DOS, 1994)
40		Weebee Worlds (DOS, 1994)
40		Mouse in Lab (Windows, 2017)
40		Facetrex (DOS, 1995)
40		Demineur (DOS, 1995)
40		Madragon (DOS, 1995)
40		VW Sharan: Pack 'n Puzzle (DOS, 1995)
40		Arcy 2 (DOS, 1994)
40		Joining Hands 2 (Windows, 2013)
40		New Beetle Tracks and Gaps (Windows, 1997)
40		Visual Sokoban (Windows, 1999)
40		Farocar (Windows, 1997)
40		StarFire (Windows, 1999)
40		PocoMan! (Windows, 1996)
40		Cheat Mine (Windows, 1996)
40		ClockWerx (Windows, 1995)
40		Under Pressure (Windows, 1995)
40		Minesweeper (Windows, 1995)
40		Hero Defiant (Windows, 1998)
40		Amazing Kye (Windows, 2001)
40		PuzzPower (Windows, 2000)
40		Four Orbs (Windows, 2000)
40		Ultimine (Windows, 2000)
40		Neutron Trails (Windows, 2000)
40		Bulldozer II (Windows, 2000)
40		Baroll (Windows, 2001)
40		Pandora's Box (Windows, 1999)
40		Coconuts (Windows, 1999)
40		Rainbow Hero (Windows, 2015)
40		Quell: Memento (Windows, 2015)
40		Maze (DOS, 1983)
40		El Grinch (DOS, 1983)
40		Switch (DOS, 1982)
40		PolyMaze (DOS, 1983)
40		Labyrinth (DOS, 1986)
40		Quadrel (DOS, 1990)
40		Argh (DOS, 1989)
40		Triskelion (DOS, 1987)
40		Black Box (DOS, 1982)
40		JezzBall Classic (Windows, 2016)
40		Akin (Windows, 2016)
40		PixlCross (Windows, 2015)
40		Quell: Reflect (Windows, 2015)
40		Bulldozer (Windows, 2000)
40		Quell: Zen (Windows, 2016)
40		LOOP (Windows, 2015)
40		Wave Mechanics (Windows, 2015)
40		Simple Sokoban (Windows, 2014)
40		Numbers & Logic I (DOS, 1991)

Notes: Games similar to Ultimate Games: 25,000 Sudoku, Games like Ultimate Games: 25,000 Sudoku, Global Software Publishing Ltd., Windows, Puzzle, Top-down, Fixed, Flip-screen, PC, Game Similarities.