PopCap Games also has a give-away for today: a free copy of Zuma for either Windows or the Mac (one or the other, in a single order; I suspect you can get both by "buying" one at a time). They sent out a message to all their newsletter subscribers, but the links and coupon codes work whether you are a subscriber or not (you do have to give them your name and email during checkout, so you may start getting the newsletter). In fact, if you go to their home page, you'll see the offer there, too!.
Game Description
Deep in the jungle lie hidden temples bursting with traps and trickery, and it's up to you to uncover their treasures. Fire magical balls from your stone frog idol to make matches of three or more and clear the deadly chain before it reaches the golden skull.
Explore all the temples — if you're good, you’ll rack up huge combos and special bonuses that'll help you on your way. But think fast and aim smart, or you'll be history in this action-packed puzzle challenge!