Half-Life 25th Anniversary Adventure — LambdaGeneration
hl25.lambdageneration.com
A year ago today, we also released the LambdaGeneration Half-Life 25th Anniversary Adventure. You can still play the game (and get the achievement for your LambdaGeneration profile!) hl25.lambdageneration.com/
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Is it also playable on mobile?
yeah it is but its better on pc
as he said
Um, just curious... I just got an achievement, if you click on "Claim Achievement :D" again, will you earn it again or not?
Nope, one per account
Oh ok good, I was making sure.