Warhammer Online: Wrath of Heroes entered open beta today, available through the Wrath of Heroes website. Wrath of Heroes is a free-to-play PVP title based on BioWare's MMO of the same-ish title, Warhammer Online: Age of Reckoning.

Wrath of Heroes offers three-sided, six-player arena combat (for a total of 18 players), each battle lasting an "intense" 15 minutes, the press release promises. We're not sure how minutes can be intense, but we assume counting each second in audible caps lock does the trick.