Splash Damage has released some pre-alpha gameplay footage from Dirty Bomb, the recently revealed upcoming PC-tailored multiplayer shooter from the Wolfenstein: Enemy Territory and Quake Wars veterans.

New details on the game's official website reveal that Dirty Bomb will indeed be free-to-play when it launches, with players now able to sign-up an reserve a username.

They've also detailed a raft of "Founders club" incentives with a bit of a crowdfunding vibe to them, ranging from a $30 entry up to $320 VIP, that offer a variety of promotional bonuses such as access to upcoming beta testing, and art books and t-shirts.

Dirty Bomb is an online PC-only multiplayer-first person shooter. You choose a role that suits your combat style, such as Medic, Engineer, Soldier, Field Ops or Sniper, and then pursue military objectives fighting alongside your team, on the streets of near-future London.

Players who join the Founders Club will have a voice, help sculpt what the game becomes, and ensure our focus on areas important to them. With your feedback, you’ll help shape movement, weapons and abilities, and ensure the game’s smooth feel and high skill ceiling. You’ll help test features such as eSports, before launch.

A FAQ explains that they expect closed beta proceedings to kick off in early 2013.

Check out the pre-alpha gameplay footage of the London Bridge map in action below or here on our HD video page.