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About Intruder
Intruder is a team‑based stealth multiplayer shooter that blends classic single‑player stealth influences with cooperative tactics. Players assume the roles of Guards or Intruders, using environmental interaction, gadgets, and real‑time communication to outmaneuver the opposing side.
The game features immersive FPS mechanics such as climbing, crawling, swimming, and realistic ballistics with windage and bullet drop. Built on Unity 3D, it includes a level‑editor plugin and regular community‑driven updates, supporting Windows and macOS platforms.
01 / THE GUIDE
Guards vs. Intruders
Players join either the Guard team, defending objectives, or the Intruder team, seeking to infiltrate and complete missions. Each side relies on stealth, tactics, and coordinated actions to succeed. The asymmetry encourages varied playstyles, with Guards setting traps and monitoring cameras while Intruders use deception and movement to avoid detection.
- Observe enemy patterns before committing to an approach.
- Coordinate role responsibilities with teammates early in the match.
02 / THE GUIDE
Interactive Environments
Buildings feature working security cameras, spotlights, sliding windows, ventilation shafts, and elevators that can be manipulated during play. Players can climb, crouch, crawl, and swim to navigate these spaces. Environmental tools such as motion detectors and explosive traps add layers of strategic depth, allowing teams to lure opponents into danger zones.
- Use ventilation shafts to bypass line‑of‑sight.
- Set motion detectors near high‑traffic routes for maximum impact.
03 / THE GUIDE
3D Audio and Hand Radio
Players can speak via proximity voice chat, which is heard by nearby enemies, creating opportunities for deception. Hand radios provide a channel for coordinating with teammates. Hand signals also allow silent communication when enemies are close, enhancing stealth tactics.
- Use proximity chat to mislead opponents about your location.
- Reserve the hand radio for critical tactical updates.
04 / THE GUIDE
Gadgets and Traps
A variety of gadgets let players trick, trap, or distract opponents. Motion detectors can be linked to explosive traps, while ragdoll physics allow players to launch foes out of windows or play dead. These tools enable creative problem‑solving and add unpredictability to encounters.
- Combine motion detectors with explosives for area denial.
- Use ragdoll physics to create diversions during high‑risk moments.
05 / THE GUIDE
Unity 3D Level Editor
Intruder includes a powerful Unity 3D level‑editor plugin, allowing the community to design custom maps and game modes. These creations can be shared via Steam Workshop, extending replayability. Regular updates incorporate community feedback, ensuring the editor and its assets evolve over time.
- Experiment with verticality when designing new maps.
- Test custom game modes with a small group before publishing.
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