Invariant

After a catastrophic incident cuts an isolated Antarctic research facility off from the outside world, a desperate fight for survival begins. As systems fail, communications break down and hostile creatures roam the facility, pieces of a larger mystery begin to emerge from the chaos left behind.
Invariant is an atmospheric, story-driven sci-fi FPS set in the 1990s, combining exploration, environmental puzzles and intense combat in the depths of Antarctica.

A SCI-FI WORLD TO EXPLORE
Make your way through laboratories, industrial sectors, living quarters and restricted areas across a large, isolated complex and the surrounding Antarctic landscape.
The story unfolds around you through characters, events and the environment. You remain in control at all times, free to explore, walk away from conversations or decide the fate of the people you encounter.
Explore beyond the main path to uncover hidden areas, alternate routes and useful supplies.

A WORLD THAT DOESN'T REVOLVE AROUND YOU
Aliens, hostile AI, military forces and friendly characters inhabit the same world and react not only to you, but to each other.
Encounters are not limited to scripted sequences. Different groups can meet, fight or cooperate on their own, allowing situations to unfold dynamically depending on who is present.
There are no untouchable friendly characters. You are free to walk away, intervene, help them or eliminate any NPC you encounter.

PUZZLES AND TRAVERSAL
Interact with facility systems and physical objects to solve environmental puzzles, overcome obstacles and gain access to new areas.
Navigate the facility and its surroundings using a variety of traversal mechanics, including first-person platforming and manual ice climbing. Use a pair of ice axes to scale frozen surfaces and reach otherwise inaccessible areas.
INTENSE FIRST-PERSON COMBAT
Fight with an arsenal inspired by firearms of the 1990s, alongside experimental weapons, technology and power-ups, with primary and secondary fire modes giving each weapon a distinct set of capabilities.
Combat ranges from smaller encounters throughout the facility to more intense battles against larger and more varied groups of enemies.

STAY IN THE FIGHT
Weaken enemies and finish them at close range to recover health. Store power-ups found throughout the facility and activate them when you choose, rather than using them the moment you pick them up. Dealing damage, taking hits and performing finishers builds Rage. Unleash it to dramatically increase your damage, speed and mobility.