Collision of Worlds
A unified roleplaying system built to let very different worlds, genres, and characters meet at the same table.
Explore Collision of WorldsLIMEY DRAGON
Games, worlds, and campaigns built to be played.
Home of Collision of Worlds, original campaign material, game-reference projects, and the Limey Dragon archive.
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Campaigns
Campaign books, player packets, maps, pregenerated characters, and long-form settings from ongoing projects.
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The public archive for rules references, sourcebooks, campaign material, lore, maps, and project documentation.
Open the wiki FEATURED SYSTEM
Collision of Worlds
One system. Any world.
Collision of Worlds was created to make crossover gaming practical. Instead of rebuilding characters every time a campaign changes genre, the system provides a shared d100 framework for people, machines, monsters, heroes, starships, armies, and stranger things to exist together.
Read the system overviewd100Unified core mechanic
Genre-freeFantasy to science fiction
Cross-worldBuilt for mixed settings
CAMPAIGNS
Ready-made worlds to explore
Silent Night
A broken-world superhero campaign where the sky falls and the old communications network dies with it.
The Black Meridian
A Collision of Worlds campaign with complete player material and campaign support.
The Black Reliquary
A Warhammer 40,000 campaign project with a full character packet and campaign material.
The Broken Vanguard
A City of Heroes campaign with campaign book, maps, and player-facing handouts.
PROJECTS & ARCHIVE
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Sourcebooks & Rules
Browse system material, sourcebooks, rules references, conversions, and setting documents.
Maps & Handouts
Player maps, campaign handouts, location references, and supporting material for active campaigns.
Downloads
Find downloadable campaign books, player packets, reference PDFs, and other public releases.
LIMEY DRAGON WIKI
The complete public archive
Campaigns, sourcebooks, lore, maps, reference material, and downloadable PDFs are collected in one searchable place.
ABOUT
Built by J. Kerr
Limey Dragon is a home for tabletop game design, campaign building, rules conversion, reference projects, and the ever-growing Collision of Worlds library.