EA is currently offering Dragon Age: Origins for free via Origin's “On the House” program.
The game can be claimed for free through Origin's website. All you need to claim your game is an Origin account. The deals offered in this program can appear or disappear at any time, so make sure to grab your copy of Bioware's RPG while you can.
Other games EA has offered in the past include Dead Space and Plants vs Zombies.
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Source: GameInformer
Image: GameInformer