Players who registered copies of "SimCity" will receive details on how to download the free game March 18.

NPR: EA Apologizes For 'SimCity' Launch Woes

The amount is enough to download one free game.

BBC: Electronic Arts free game code goes viral on Reddit

More to come later as I play the game further (as well as in my upcoming series on the MOBA genre) but for now this free iOS game is well worth the download.

FORBES: 'Heroes Of Order & Chaos' Brings MOBA To Mobile

Beginning today, gamers can download a new free Star Wars game from Brisk on Google Android and Apple iOS devices.

FORBES: Connect

And here's the best part: As a reward to the game's Kickstarter backers, Carmageddon is completely free to download today.

ENGADGET: blogger-avatar

Zynga games like "FarmVille" led the way for games that are free to download and play but then require players to pay small fees for in-game upgrades or premium content.

CNN: Apple settles suit over in-game iTunes purchases by kids

Mobile phone users could download a mobile game, after which Puma sent them a coupon for a free phone toy accessory.

FORBES: CMO Network

Zynga is also putting out special Lady Gaga game gift cards at Best Buy locations in the U.S. and Canada that will include a free download of the new album, a Lady Gaga unicorn in Farmville, and a chance to hang out with the singer at her video shoot.

FORBES: Zynga Goes Gaga Over Lady Gaga With Music Tie-Ins