Statistics for Valve's Games

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Year Released	Answer	% Correct
1998	Half-Life	100%
2004	Half-life 2	100%
2007	Team Fortress 2	97%
1999	Counter-Strike	94%
2007	Portal	94%
2011	Portal 2	94%
2008	Left 4 Dead	91%
2009	Left 4 Dead 2	91%
2012	Counter-Strike: Global Offensive	88%
2004	Counter-Strike: Source	88%
2013	Dota 2	88%
2020	Half-Life: Alyx	88%
1999	Team Fortress Classic	84%
1999	Half-Life: Opposing Force	81%
2007	Half-Life 2: Episode 2	78%
2001	Half-Life: Blue Shift	78%
2006	Half-Life 2: Episode 1	75%
2004	Half-Life: Source	72%
1998	Day of Defeat	69%
2005	Day of Defeat: Source	63%
2004	Counter-Strike: Condition Zero	53%
2000	Deathmatch Classic	50%
2018	Artifact	47%
2004	Half-Life 2: Deathmatch	44%
2019	Dota Underlords	16%
2000	Richochet	13%

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