Nosgoth, the F2P PC action title based in the same world as the legacy of Kain and Soul Reaver series, will be available to all to play this coming weekend for four days, starting at midday on Thursday and finishing at 8am on Monday (11th), as its closed beta is opened to the public.
The game is a team-based, vampire vs human multiplayer action title.
The game's publisher Square-Enix state there's no need to register or sign up for a beta key, and any progress made will be saved for the open beta later this year if you want to come back, or you can register for the closed beta and continue playing.
Check the official site for more information.