SEGA announces the release of The Trigger, a fifth add-on for Alien: Isolation that serves as a prequel for Creative Assembly's survival/horror game. Here's the description from the Steam page for the DLC:

Welcome to The Trigger, the fifth add-on content pack for Alien: Isolation.

Can you make Sevastopol safe? You’ve been given a box of explosives and the locations to set them. All you need to do now is pull the trigger… and stay alive.

• Features three all-new Survivor Mode maps. Can you survive and get the highest score?
• Play as Ricardo and learn the truth behind the explosives on board Sevastopol.
• Avoid security alarms, take on Working Joes and above all, survive the Alien.

If you own Alien: Isolation Season Pass, DO NOT purchase this content here as you will be charged again.