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Klaus Veen's Treason header art

Klaus Veen's Treason

Treason is a 3-16 player party shooter of teamwork and betrayal, set among Italian mobsters. Use proximity voice chat, unique abilities/gadgets, and strategy to prove your innocence or deceive others.

Steam Page
Publisher
Release
January 31, 2023
3 years and 184 days ago
Steam Reviews
Very Positive1,527 reviews89.6%

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Updated: Jul 14, 2026Developer scaleThe operating scale of the game's developer.
Updated: Jul 14, 2026Publisher scaleThe operating scale of the game's publisher.
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The title released with a separate publisher relationship.

Media

11 items

About the Game

At the start of each round, players must uncover the Don's killer by finding Clues. Delivering enough Clues to the Clue Processing Unit reveals a Traitor. Traitors conspire against the Innocents, Detective, and Doctor. Traitors win by eliminating all Innocents, while Innocents win by identifying and eliminating the Traitors.


Classes:

Slim Class: Quick but weak.
  • Adrenaline - Boosts movement speed temporarily
  • HP: 80
  • Movement Speed: +10%
  • Damage Bonus: Medium and Shotgun ammo deal 15% more damage
Medium Class: Balanced.
  • Heal - Restores 25 HP
  • HP: 100
  • Damage Bonus: Medium and Sniper ammo deal 7% more damage
Heavy Class: Slow but strong.
  • Shield - Reduces incoming damage by 30% temporarily
  • HP: 110
  • Damage Bonus: Light ammo deals 10% more damage

Role Abilities & Gadgets:

Innocent: Find Clues to snuff out Traitors.
  • Class Ability - Varies by class
  • Clue Locator - Shows positions of all active clues
  • Doctor Locator - Shows position of the Doctor
  • Detective Locator - Shows position of the Detective
Traitor: Eliminate all Innocents.
  • Class Ability - Varies by class
  • Radar - Reveals player locations
  • Revival - Resurrects a dead player
  • Bomb - Plants explosive traps
  • Silenced Pistol - Fires silent shots
  • Spiked Bat - Delivers lethal melee strikes
  • Disguise - Conceals your identity
  • Bear Trap - Immobilizes players
  • Poison Dart - Slows targeted players
Detective: Scan bodies to confirm deaths publicly.
  • Heal - Restores 25 HP
  • Shield - Reduces incoming damage
  • Detective Radar - Reveals player locations
  • Doctor Resuscitation - Revives an unconscious Doctor
  • Scanner - Identifies the killer of a body, or the planter of a bomb
  • Stunning Taser - Stuns and disarms a player
Doctor: Resuscitate unconscious players.
  • Range Heal - Heals you and nearby players
  • Range Adrenaline - Boosts your and nearby players' movement speed temporarily
  • Resuscitation - Resuscitate an unconscious player
  • Body Radar - Locates unconscious players
  • Health Station - Allows players to restore HP
Zombie Traitor: Help Traitors.
  • Adrenaline - Boosts movement speed temporarily
  • Radar - Reveals player locations
  • Bomb - Plants explosive traps
Zombie Don: Help Innocents.
  • Heal - Restores 25 HP
  • Shield - Reduces incoming damage
  • Adrenaline - Boosts movement speed temporarily

Clue Processing Unit (C.P.U.):

At the start of each round, the Don's body appears. When a player discovers it, Clues spawn across the map for players to collect. Delivering enough Clues to the C.P.U. reveals a Traitor. Beware: Traitors can sabotage the C.P.U. by shutting off its power supply!




Join our Discord community!


Treason is a hobby project with a small but active and friendly community. Use the Discord server to look for players, if the game servers are empty.