Killer Inside Us is a debut social deduction title where 4-10 players engage in online matches aboard a space station. Players are randomly assigned roles as either crewmates or killers. As a crewmate, your objective is to identify the impostor among the group or complete the station's tasks. Killers work to eliminate crewmates and sabotage the station's operations without being discovered.
The core gameplay loop centers on strategic deception and deduction, as crewmates must collaborate to expose the killer. Killers can disrupt the station's functionality through sabotage, creating opportunities for discrete eliminations. Communication tools include in-game text chat and in-game voice chat, facilitating player interaction during investigations and accusations. The game offers customization options and various game settings to tailor the experience. This is a multiplayer social deduction game focused on uncovering hidden roles and objectives within a confined setting.