Two sides, one facility
Intruder is a team-based stealth shooter where one side plays Intruders sneaking to objectives and the other plays Guards trying to stop them. The maps are built as real spaces you can move through: climb walls, crouch, crawl through ventilation shafts, swim through water, and use sliding windows and elevators. Buildings have working security cameras, spotlights, and other interactive parts you can use or abuse. Missions include multiple objectives and more than one escape route, so a run rarely plays out the same way twice.
Playing together
Communication is the core of the team play. You get a hand radio for talking to your own team and proximity voice chat that anyone nearby can hear, which means enemies can eavesdrop on you and you can deliberately feed them bad information. When enemies are close and you need silence, use the real SWAT hand signals instead of speaking. Guards can watch enemy movement on live security cameras, place motion detectors next to explosive traps, and call out positions over the radio. Intruders rely on gadgets to trick, trap, distract, and outsmart the other side. Ragdoll physics lets you launch opponents out of windows, or play dead while they walk past.
Before you start
Gunplay is closer to a simulation than a run-and-gun shooter: bullets have windage and bullet drop, so distance and conditions matter. The game carries a Difficult tag, and the stealth, tactics, and environmental interactions reward slow, coordinated play over rushing. It is Early Access, with updates and new features arriving based on community feedback. If you want to build your own content, a Unity 3D level editor plugin lets you create maps and game modes.