44		Sargon III (DOS, 1984)
44		Mychess (DOS, 1984)
43		Bluebush Chess (DOS, 1983)
41		Chess (DOS, 1981)
41		PowerChess (DOS, 1989)
41		Fritz 6 (Windows, 2000)
40		Chess 2: The Sequel (Windows, 2014)
40		Simply Chess (Windows, 2015)
40		Chess! (DOS, 1992)
40		Grandmaster Chess (DOS, 1992)
40		Virtual Chess (DOS, 1995)
40		Chess System Tal (DOS, 1997)
40		Fritz & Kishon: Schachspielen mit dem Meister der Satire (Windows, 2007)
40		HIARCS 8 (Windows, 2006)
40		Chess System Tal II (Windows, 1999)
40		Mephisto Genius 99 (Windows, 1999)
40		Power Chess 2.0 (Windows, 1999)
40		Power Chess 98 (Windows, 1997)
40		Chess.net for Windows (Windows, 1999)
40		Chess.net Gold (Windows, 1999)
40		Chess Champ (Windows, 2003)
40		Classic Games: Chess (Windows, 2002)
40		Fritz 7 (Windows, 2001)
40		Microsoft Bicycle Series (Windows, 2001)
40		Virtual Chess (Windows, 1995)

Notes: Games similar to Psion Chess, Games like Psion Chess, Psion Software Ltd., Psion Software Ltd., DOS, Strategy, Tactics, Chess, Top-down, PC, Game Similarities.