Ultraviolet Grasslands and the Black City
1st EditionCore Mechanic
Roll d20 + the relevant stat + a trained skill bonus to exceed a target number. A natural 1 fails and a natural 20 succeeds. Advantage adds a die and keeps the better result; disadvantage keeps the worse result, and the two cancel. Some tests instead read the total on an outcome table.
Best For
Groups who want a long science-fantasy caravan campaign centered on exploration, trade, and survival across an open-ended world.
Highlights
Weekly travel procedures connect supplies and setbacks to the time available for exploration. Discoveries award experience for reaching and investigating unfamiliar places. Market research and trade-route investments let a caravan turn geographical knowledge into income.
Considerations
The included SEACAT rules are an excerpt rather than the complete engine, and most spells are omitted. A week of rest normally restores only one damaged attribute or condition. The setting includes slavery, drug addiction, and body horror.
Third-Party Publishing
Original free or commercial WTF-compatible RPG books and supplements; names of entities from Luka Rejec's game worlds may be used with source acknowledgment. Art and text reuse or translation requires explicit permission, except attributed quotations. Publisher and game logos require permission.
Official terms are in the downloadable Vastlands Guidebook, page 166. This route covers WTF-compatible works and acknowledged UVG entity names; it does not establish a reuse license for the original SEACAT rules. Required independent-production and copyright notices apply. Summary only, not legal advice. Check current terms before publishing.