80		Starship Kingdom (Windows, 2007)
80		Space Dodge'm (Windows, 1996)
80		Constellation (Windows, 2009)
80		Full Metal Planet (DOS, 1990)
70		Ogre (DOS, 1986)
70		Space Crusade (DOS, 1992)
55		Exodus: Proxima Centauri (Windows, 2018)
55		Super X Chess (Windows, 2018)
55		Pandemic: The Board Game (Windows, 2018)
55		Isle of Skye (Windows, 2018)
54		Uno (Windows, 2017)
54		Ancient Go (Windows, 2017)
54		Carcassonne (Windows, 2017)
54		Yatzy (Windows, 2017)
54		Race for the Galaxy (Windows, 2017)
53		Talisman: The Horus Heresy (Windows, 2016)
53		Gremlins, Inc. (Windows, 2016)
53		XenoShyft: Onslaught (Windows, 2016)
53		Atriage (Windows, 2016)
53		Infection: Humanity's Last Gasp (Windows, 2016)
52		Othello (Windows, 2015)
52		BattleLore: Command (Windows, 2015)
52		Warhammer 40,000: Regicide (Windows, 2015)
52		The Game of Life (Windows, 2015)
51		Spectromancer (Windows, 2009)
51		Ascension: Deckbuilding Game (Windows, 2014)
51		Starion Tactics (Windows, 2014)
50		Splotch (Windows, 1999)
50		Einfach Genial 2.0 (Windows, 2009)
50		Crosses and Noughts (Windows, 1999)
50		Risk: Factions (Windows, 2011)
50		Risk: The Official Game (Windows, 2012)
50		Em@il Games: Upwords (Windows, 1999)
50		Anasazi Tasholiiwe (Windows, 1997)
50		Third Reich (DOS, 1996)
50		Amoba (DOS, 2011)
50		The Game of Life (Windows, 2013)
50		World Domino Championship (Windows, 2005)
50		Diplomacy (Windows, 2005)
50		Monopoly (Windows, 2012)
50		Small World 2 (Windows, 2013)
50		Aevum Obscurum (Windows, 2006)
50		Battleship (Windows, 2012)
50		The Royal Game of Ur (Windows, 1996)
50		Scrabble Interactive 2007 (Windows, 2006)
50		Monopoly 2008 (Windows, 2007)
50		Segyun-jeon 95 (DOS, 1995)
50		Aggravation (DOS, 1991)
50		TrianGO (DOS, 1989)
50		Combat Checkers (DOS, 1991)
50		Scrabble (DOS, 1992)
50		The Banyon Wars (DOS, 1990)
50		Aggression (DOS, 1990)
50		Automon (DOS, 1990)
50		Stratego (DOS, 1990)
50		Scrabble (DOS, 1991)
50		Sea Hunt (DOS, 1987)
50		Conquest (DOS, 1992)
50		Lucullus (DOS, 1995)
50		Astérix: Caesar's Challenge (DOS, 1995)
50		Em@il Games: Scrabble (Windows, 1999)
50		Bounders and Cads (Windows, 2013)
50		Yahtzee (DOS, 1983)
50		Chessmaster 5500 (Windows, 1997)
50		Pente (DOS, 1986)
50		Theatre of War (DOS, 1992)
50		Segyun-jeon (DOS, 1992)
50		Scrabble Online (Windows, 2004)
50		Ancient Empires Lux (Windows, 2006)
50		Engulf (Windows, 2000)
50		Die Sternenfahrer von Catan (Windows, 2000)
50		Backgammon (Windows, 2000)
50		Wari (Windows, 2000)
50		Moku (Windows, 2000)
50		SPOC the Chess Master (DOS, 1983)
50		Scrabble (Windows, 2001)
50		Senet (Windows, 1995)
50		Push-Pull (Windows, 2000)
50		Hexapawn (Windows, 2000)
50		Ancient Egyptian Mehen: The Forbidden Game of the Snake (Windows, 1998)
50		From Corner to Corner (DOS, 1993)
50		Skoczki (DOS, 1994)
50		Jeu de Dames 3D (Windows, 2002)
50		Othello de Luxe (Windows, 1999)
50		3D Reversi (Windows, 2004)
50		Scrabble (Windows, 1999)
50		20 Squares (Windows, 1995)
50		Um El Bagara (Windows, 2000)
50		Othello (Windows, 1996)
50		Reversi 3D TR (Windows, 2003)
50		Risk: The Game of Global Domination (Windows, 1996)
50		Chaos Overlords (Windows, 1996)
50		Patolli (Windows, 1996)
50		Euphrat & Tigris (Windows, 2003)
50		Scarabeo Digital (Windows, 2004)
50		Memoir '44 Online (Windows, 2011)
50		Flip 'Em 3D (Windows, 2003)
50		Schach! (Windows, 1996)
50		Expedition nach Tikal (Windows, 2003)
44		Steam: Rails to Riches (Windows, 2017)
44		Eight-Minute Empire (Windows, 2017)
44		Agricola: All Creatures Big and Small (Windows, 2017)
44		Lux Alliance (Windows, 2017)
43		Tatsu (Windows, 2016)
42		Lux Delux (Windows, 2015)
41		Risk II (Windows, 2000)
40		Rondgang (DOS, 1992)
40		Tribolo (DOS, 1991)
40		Sexy Droids (DOS, 1992)
40		Star Wars: Monopoly (Windows, 1997)
40		Othello (DOS, 1991)
40		Hex (DOS, 1983)
40		Tiào Ch'i (DOS, 1983)
40		Kalah (DOS, 1993)
40		The Battle on the Black Sea (DOS, 1992)
40		Draughts (DOS, 1991)
40		Computer Scrabble (DOS, 1987)
40		Colossus X Backgammon (DOS, 1992)
40		Morkin 2 (DOS, 1992)
40		Hoyle Children's Collection (Windows, 1996)
40		Bonus (DOS, 1993)
40		Tic Tac Toe (DOS, 2002)
40		Monika's Tic Tac Toe (DOS, 2006)
40		Mario's Game Gallery (DOS, 1995)
40		Argo Checkers (DOS, 1993)
40		FLIP-ELLO (DOS, 1982)
40		Tactile (DOS, 1989)
40		Mens Erger Je Niet (DOS, 1990)
40		5 Intelligent Strategy Games (DOS, 1991)
40		Phagefight (DOS, 1992)
40		Intelligent Strategy Games 10 (DOS, 1993)
40		Casino Craps (DOS, 1992)
40		Hide & Sink (DOS, 1983)
40		Classic Board Games (Windows, 2002)
40		OXO (Windows, 2002)
40		Arcade Chess (Windows, 2002)
40		Fanorona (Windows, 2001)
40		Checkers (Windows, 2001)
40		Checkers (Windows, 2010)
40		Video Chess (Windows, 2010)
40		Word Connect (Windows, 1998)
40		Risk (Windows, 2007)
40		Dive! (Windows, 2004)
40		Reversi (Windows, 2010)
40		Ishido (Windows, 2003)
40		Chinese Checkers (Windows, 2001)
40		Nine Men's Morris (Windows, 2001)
40		Colony (Windows, 1999)
40		Computer Mühle (Windows, 1999)
40		Tic Tac Toe (Windows, 1998)
40		Inucla No Classical (Windows, 1998)
40		MVP Checkers (Windows, 1998)
40		Dames & Backgammon (Windows, 1999)
40		Reversi Plus (Windows, 2000)
40		Sliding Coins (Windows, 2001)
40		Tafl (Windows, 2001)
40		Alquerque (Windows, 2001)
40		Dodgem (Windows, 2001)
40		Tic Tac Toe (Windows, 2001)
40		Multiplayer Tic Tac Toe (Windows, 2008)
40		BullyFrog (Windows, 2000)
40		Microsoft Windows/386 (included game) (DOS, 1987)
40		Othello (DOS, 1988)
40		Tommy's Tic-Tac-Toe (DOS, 1987)
40		Tommy's Othello (DOS, 1986)
40		WZebra (Windows, 1998)
40		Espionage (DOS, 1988)
40		Chess & Checkers (DOS, 1988)
40		Checkers (DOS, 1989)
40		The Games People Play: Gin ∙ Cribbage ∙ Checkers ∙ Backgammon (DOS, 1990)
40		Squares (DOS, 1989)
40		The Computer Edition of Scrabble Brand Crossword Game (DOS, 1989)
40		Blue Angel 69 (DOS, 1989)
40		Verso (DOS, 1986)
40		Tommy's Checkers (DOS, 1986)
40		Battlegammon (Windows, 1999)
40		Tic Tac Toe (DOS, 1982)
40		Em@il Games: Grand Master Chess - Checkers & Backgammon (Windows, 1999)
40		Mario's Game Gallery (Windows, 1995)
40		Tic-Tac-Toe (Windows, 1999)
40		Othello (DOS, 1982)
40		LEGO Chess (Windows, 1998)
40		Microsoft Windows (included game) (DOS, 1985)
40		8088 Othello (DOS, 1985)
40		Cubic Tic Tac Toe (DOS, 1985)
40		Reversi (DOS, 1985)
40		Apples & Oranges (DOS, 1990)

Notes: Games similar to Terraforming Mars, Games like Terraforming Mars, Luckyhammers Entertainment Inc., Asmodee Digital, Windows, Strategy, Tactics, Sci-Fi, Futuristic, Board Game, Turn-based, 1st-person, Top-down, PC, Game Similarities.