Blizzard is celebrating one year of Diablo 3 by giving away free buffs to players.

Posting on the Diablo 3 blog, community manager Lylirra wrote: "One year ago today, the gates of the Burning Hells opened and Diablo III was unleashed onto the world. Since then, millions of heroes have been created, billions of hours have been spent in games, and trillions of demons have been slaughtered without mercy.

"We've grown and improved a lot since release, both as a game team and as a community, and thanks to your feedback, passion, and unquenchable bloodlust, we expect the next year to be even more epic."

In celebration of the milestone, Blizzard is giving away free 25 per cent boots to Magic Find and +EXP stats between May 15 and May 21.

The buff is only available while logged in to the game, but will stack with other similar bonuses - the +EXP bonus will stack multiplicatively and the Magic Find bonus will stack above the 300% cap.

"Thank you for your continued support, and we wish you the best of adventures in the coming year," concluded Lylirra.

Diablo 3 is due to launch on PS3 later this year.