Gabe Newell's first video game work that SPOnG is aware of is the 1998 title, "Half-Life" (PC) . Of the titles listing Gabe within the credits , "Half-Life: Generation" (PC) and "Half-Life" (PC) have been best selling titles.
Gabe's most recent involvement was on the 2001 release "Half-Life: Generation 2" (PC).
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