Portal, the game that won more than 70 Game of the Year awards and was considered one of the biggest surprises of recent years, is offered as a completely free download by Valve until May 24 2010. Although this is clearly a smart marketing move prior to the release of Portal 2, it will give everybody a chance to try out the game and find out if the cake is or is not a lie!

Here’s how Valve puts it:

“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.”

So I think that it’s a no brainer: you’ll head over to Portal’s page on Steam and hit that big download button to download Portal for free and enjoy a great game – you’ve guessed it! – completely free of charge!

Will you download Portal or you already have the game?