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Today is also the 25th Anniversary of Half-Life: Opposing Force!

Released November 19, 1999 as an expansion pack for Half-Life, which released exactly a year prior. 

Also the first game released by Gearbox

Today is also the 25th Anniversary of Half-Life: Opposing Force! Released November 19, 1999 as an expansion pack for Half-Life, which released exactly a year prior. Also the first game released by Gearbox

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Man VALVe keeps making Adrian dirty