
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.
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DLCs (1)
About Klaus Veen's Treason
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
- Heal - Restores 25 HP
- HP: 100
- Damage Bonus: Medium and Sniper ammo deal 7% more damage
- 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
- 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
- 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
- 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
- Adrenaline - Boosts movement speed temporarily
- Radar - Reveals player locations
- Bomb - Plants explosive traps
- 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.
Game details
Game details
Age ratings
Languages
Features
Klaus Veen's Treason player count & reviews
90% positive reviews all-time · 17 peak players in the last 30 days.
Klaus Veen's Treason — frequently asked questions
How many people play Klaus Veen's Treason?
Klaus Veen's Treason peaked at 17 concurrent players on Steam in the last 30 days (highest on Jul 21, 2026). The player chart on this page updates daily.
How can I get Klaus Veen's Treason at a discount?
Create a free price alert on this page and KingsPrice will email you when Klaus Veen's Treason drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
System requirements
Minimum
- OS *: Windows® 11 (32/64-bit)/10/7/Vista
- Processor: 1.7 GHz Processor or better
- Memory: 1 GB RAM
- DirectX: Version 9.0b
- Network: Broadband Internet connection
- Storage: 4 GB available space
Recommended
- OS *: Windows® 11 (32/64-bit)/10/7/Vista
- Processor: Pentium 4 processor (3.0GHz, or better)
- Memory: 2 GB RAM
- DirectX: Version 9.0c
- Network: Broadband Internet connection
- Storage: 4 GB available space









