BioShock: Infinite will come with a difficultly mode called “1999”, Irrational Games has announced.

The unique “hard mode” will include a feature where your character’s choices have “irreversible implications”, says the developer.

The mode has been created in response to fan feedback. The studio says it had a “hunch” about including such a mode, but the community’s voice ensured its implementation.

Speaking on the company’s blog, community manager Eduardo Vasconcellos said, “BioShock Infinite’s 1999 Mode will feature an especially demanding gaming experience, forcing you to examine your decisions while going through your adventure in Columbia. With every choice you make, there are irreversible implications, and if your choices guide you down a path not suited to your play style, you will suffer for it.

“It’s not simply a matter of adjusting the difficulty sliders in the game – the team went much further than that. Resource planning? If you’re to survive this mode, proper planning will be crucial. Combat specializations? You’ll need to develop them efficiently and effectively throughout the story; any weapon will be useless to you unless you have that specialization. Combat? You will need to carefully target every shot, and your health will be set to an entirely different baseline. Game saves? Well, yes, there will be those, but according to Irrational Games Creative Director Ken Levine ‘there are game saves, and you’re gonna f***ing need them.’”