For a ten-year-old, Gordon Freeman has some pretty sharp facial hair. Yes, ten years ago this very day, those idiots at Black Mesa opened a pesky interdimensional rift and let all kinds of horrible beasties spill out into our universe. The big dopes.

Valve are celebrating Half Life's tenth anniversary by selling the game on Steam for just 98 cents (1998! Do you see what they did there?) until 12:01 pm PST on November 21. If you haven't yet played through this bit of gaming history, now might be a good time.

Buy Half-Life 1 [Steam]

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