The Steam Website announces the free release of Portal, celebrating the availability of a Mac compatible version with word that Valve's award-winning first-person puzzle game is available for free between now and May 24. Word is:

Well guess what: For the first time ever, Portal is also available for the Mac.

"Capitol news! But the excellent puzzle adventure Portal won over 40 Game of the Year awards; Surely it must cost at least five or six hundred dollars."

You'd think that, especially since it actually won over 70 Game of the Year Awards. But, like we keep saying, Portal is free. Free on the Mac. Free on the PC. But only until May 24th. So you only have a few days to decide if your free copy of Portal is worth the price we're currently charging - which is you ever-so-slightly moving your index finger just barely enough to click the big red "download" button right there to the left.