Animal · 1 hex · SM -2 Viper Snake (Monsters on Automatic; answers SRD 3.5, SRD 5.1: Poisonous Snake)
Under three feet, patterned into invisibility against dead leaves, and usually encountered by standing on it. A viper does not behave like a monster: it strikes once, it means it, and it leaves. The consequences arrive later, and they are what the party actually has to deal with.
Attributes
Melee attacks
| Usage | Level | Damage | Reach |
|---|---|---|---|
| BiteBite (16): 1d-7 impaling, Reach C. Roll HT or lose the use of the bitten limb and take a slow, ugly wound that will not close. Untreated it is often fatal days later rather than minutes. | 16 | 1d-7 impaling | C |
Traits (12)
- Bestial
- Cannot Speak
- Cold-Blooded
- Discriminatory Smell
- Fangs
- Infravision
- Injury Tolerance (No Neck)
- Night Vision 3
- No Fine Manipulators
- No Legs (Slithers)
- Restricted Diet (Carnivore)
- Vibration Sense (Air)
Skills (3)
- 16Brawling
- 17Stealth
- 11Tracking
Notes
- Racial cost: -95 points of traits plus 20 points of skills.
- Body weight: 2 lb.
- Movement: ground Move 6 (primary).
- The 5.1 corpus prints this as 'Poisonous Snake' and the 3.5 corpus as 'Viper Snake'; both are this record.
Encounter rating
Tags
- monsters-on-automatic
- ai-generated
- doa-authored
- srd-5-1
- srd-3-5
- animal
- reptile
- forest
- swamp
- swarm-forming
- familiar
- hazard
- venomous
GCS v5 downloads
Where this one came from
- Source record
- Viper Snake [Monsters on Automatic, SRD coverage: snakes]
- Source system
- doa_fixture / doa_authored
- Released under
- cc_by_4_0
- Conversion
- 0.1.0-srd-independent-build
- Review status
- approved
- Credit
- Monster statistics, ratings and description prose by Monsters on Automatic; AI-generated first draft, project-reviewed, released under CC BY 4.0.
- Description
- Written by Dungeons on Automatic, released under cc_by_4_0
- Independently authored GURPS build. The SRD supplies the creature identity this record answers to and nothing else: no SRD statistics, wording or presentation is reproduced, and no third-party GURPS conversion was used as an input.
- Answers the SRD heading(s): Poisonous Snake (SRD 5.1); Viper Snake (SRD 3.5).
- Racial template: -95 points across 18 traits, plus 3 racial skill(s) worth 20 points.
- Every trait is drawn from the project's controlled GURPS vocabulary in scripts/srd/trait-library.mjs, which carries the page reference and published cost for each entry.
- sourceSystem is recorded as doa_fixture because that is the package contract's value for project-authored material; the SRD headings this record answers are in provenance.coversSourceIdentities.
- Ratings are recomputed through the consumer CER path on every build, so a mechanics change cannot leave a stale rating behind.
- Typical Stats, damage and ratings are derived from the racial template rather than authored beside it, so the sheet and the stat block cannot disagree.
- GCS ancestry draft: gcs/viper-snake.gct
- The published Move is the primary medium's cruising Move; sprint figures are stated in the movement note and not folded into it.
- Treasure and grappling are not authored for this record and ship as explicit nulls, which reads as known absent rather than forgotten; `lair` carries a short habitat note instead, because where a creature dens is an encounter fact rather than a loot one.
- Body mass is the figure the build was scaled from and the one fact that makes it checkable; see the gurps-animal-sanity-check skill for the bands.
- About 3 feet, which is the SM -2 row.
- Added after a post-hoc comparison against independent GURPS fan conversions of this creature: the Tracking skill, which a creature with Discriminatory Smell should always have. The comparison surfaced the gap; the build is still ours.
Copyright 2026 Monsters on Automatic. GURPS-compatible monster statistics, ratings and prose authored for this package as an AI-generated first draft under project review. No SRD text, and no third-party GURPS conversion, is reproduced. Portrait and tokens are AI-generated original art. Sources and credits.

