Delta Green
Agent's HandbookBest For
Groups who want modern investigative horror built around dangerous assignments and the relationships agents sacrifice to keep their work secret.
Core Mechanic
Roll d100 at or below a skill percentage or a statistic multiplied by five. Successful doubles and 01 are critical successes; failed doubles and 100 are fumbles. In opposed tests, a critical beats an ordinary success, then the higher successful roll wins.
Percentile skills make ordinary task resolution straightforward. The main learning lies in the interaction of sanity loss, Willpower and damaged Bonds. Combat defenses and recovery between operations add procedures that take several sessions to internalize.
- Free to tryQuickstartA free starter you can actually play
- Get it nowSold newIn print or as a legal PDF
- ✓IndexFind any rule by page number
- ✓GM guidanceA chapter on how to run the game
- ✓Examples of playRules shown in action at the table
- ✓Quick referenceCheat sheet or summary tables
- ✓Cross-referencesRules point to each other by page
5 of 5 book tools found in the core book
Highlights
Expertise can reveal clues without a roll when agents have time to investigate. Bonds let agents reduce sanity loss by damaging relationships they depend on. The core pair provides threat-building procedures and a complete operation with pacing tools and several possible outcomes.
Considerations
Combat can kill an agent abruptly or leave permanent injuries. Sanity loss can force behavior outside the player’s control. Handlers must prepare the mystery and judge what evidence the agents can uncover.
Third-Party Publishing
Rules license All Rights Reserved
Original scenarios, monsters, rituals and characters released free of charge under the required rights notice and title restrictions. Official logos and trade dress are excluded.
Paid and pay-what-you-want game material needs a separate specific license. AI-created work, reprints, translations, original fiction and executables are excluded; subscription-funded discussion and actual-play recordings have a separate exception.
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