Splash Damage’s free-to-play online shooter Dirty Bomb is now in open beta and available on Steam.

The studio is best known for Wolfenstein: Enemy Territory, Enemy Territory: Quake Wars, and Brink.

Dirty Bomb is an asymmetrical team-based game in which players will build a squad of specialised mercenaries, each with their own unique personalities and abilities, to take into the fray on a quest for riches and bragging rights.

There are currently 12 mercs available, five of which are free to use. Two of the merc line-up – combat medic Aura and fire-support specialist Skyhammer – will always be free, and there will be a variation of additional mercs free on an ongoing basis.

The open beta launches with five maps and two modes for players to put to the test.

According to publisher Nexon America Inc, new content will continuously be added to the game in the coming months.

“Today marks a huge achievement in our studio’s history.

Dirty Bomb is our first fully owned IP on PC, and that has allowed us to make exactly the game we wanted,” said Splash Damage founder and CEO Paul Wedgwood.

“As a studio, we are dedicated to creating the most entertaining, competitive and collaborative experiences. Dirty Bomb is a showcase of this and of our partnership and collaboration with Nexon.

“With more than two years of testing by thousands of our fans through closed alpha and beta, Dirty Bomb is a game of firsts for us and the industry.”

We trailed Dirty Bomb earlier this year and enjoyed it a lot.