Two thieves, two jobs
United heist is a first-person co-op puzzle game where you and one friend play as a pair of elite thieves hired to steal an item the client refuses to name. Before the job starts you decide who takes which side: one of you works the intel, the other goes into the facility itself. The two of you are in separate places, so neither side has the full picture on its own. The intel player works with tools, information and puzzles to open the way, while the infiltrator moves through the environment and deals with what is actually inside. The puzzles are built so that neither role can finish alone, which makes talking through what you each see the core of the game.
Playing it as a group
This one needs exactly two players, so a group of friends has to pick a pair and swap roles between runs if more people want a turn. Communication is part of the design rather than an extra: you stay in touch through an in-game walkie-talkie with voice chat built in, and the game asks for a headset so the back-and-forth stays clear. Expect to spend most of the session describing your side of the situation to each other, feeding clues across, and timing your actions so one player's move sets up the other's. The campaign is linear, so the route forward is fixed, but the story has choices, twists and multiple endings, which gives a second run a reason to exist.
Before you start
United heist is tagged with horror alongside mystery and escape room elements, so the facility has a tense, unsettling tone rather than a light puzzle-box feel. The environments are realistic 3D spaces built around logic puzzles and a heist story, so the pace comes from figuring things out together instead of combat. Get a headset sorted before you launch, confirm your roles, and settle who reports what: the whole structure rests on two people sharing incomplete information and trusting each other's read of it.