Old School Renaissance (OSR) (2000)

The Medieval Fantasy City Generator (MFCG) is a highly influential, browser based procedural tool created by the developer watabou. Since its debut in 2017, it has become the gold standard for "instant" urban cartography, capable of generating complex, aesthetic city layouts in a single click. In late 2025 and early 2026, the tool received significant updates to its District View and Building Placement algorithms, allowing for more organic street flow and higher density urban "slums" that better reflect historical medieval layouts. Description The Medieval Fantasy City Generator is a "toy" in the best sense of the word—a lightweight, highly customizable application that prioritizes "cool looking" maps over strict geographical simulation. It uses Voronoi diagrams to partition space into districts, then fills them with procedurally generated buildings, walls, and landmarks. Because it runs entirely in HTML5, it requires no installation and is a favorite for GMs who need to generate a "capital city" or "coastal port" on the fly during a live session. System Overview & Key Features One Click Generation Pressing a single key (Enter) generates a completely new city with unique geography. The tool automatically decides where the castle, the temple, and the market square go, providing an instant foundation for a Game Master to build their narrative upon. Procedural District Mapping The 2026 version features an improved "Alleys and Blocks" view. Cities are divided into logical districts—like the Craftsmans Quarter or the Shanty Town—each with its own architectural density and procedurally generated name that can be edited by the user. Dynamic Warp Tool GMs can manually reshape the city by "warping" its boundaries. If you need a city that is long and thin to fit a specific riverbank, or a circular fortress atop a hill, the warp tool allows you to push and pull the city's footprint while the buildings rearrange themselves in real time. 3D City Viewer Integration By exporting a city as a JSON file, users can open their map in the companion City Viewer app. This transforms the 2D layout into a fully navigable 3D environment, perfect for showing players the "skyline" of the city they are about to enter. SVG and JSON Export Maps can be exported as high quality SVG files, allowing them to be opened in programs like Illustrator or Inkscape for further artistic customization. The JSON export ensures full compatibility with other "Procgen Arcana" tools and major VTTs like Foundry. Azgaar's Integration The generator is natively linked to Azgaar's Fantasy Map Generator. When a user clicks on a city in a world map, it can automatically trigger the Medieval Fantasy City Generator to build that specific town, creating a seamless "World to Street" experience. Additional links watabou.itch.io/medieval-fantasy-city-generator - Official application page watabou.github.io - The full "Procgen Arcana" suite of generators patreon.com/watabou - Official Patreon for supporting the developer

Codex Cryptica is an AI-assisted worldbuilding and campaign management tool built around a living knowledge graph instead of a folder of loose documents. Every character, faction, location, and event you create becomes a linked entity, so your world stays connected and explorable as it grows. Genre-agnostic across fantasy, sci-fi, cyberpunk, horror, post-apocalyptic, western, steampunk, and more. /images/general-media/1785233703_njCGkGGx.png Worldbuilding & Lore Entities link automatically into a visual relationship graph. A full chronology view (calendar + timeline) tracks your world's history, and multi-generation family trees keep lineages straight without manual bookkeeping. AI Co-Author The Lore Oracle grounds every suggestion in your existing lore rather than generating generic filler. Dedicated generators cover NPCs, factions, settlements, magic items, languages, and full dungeon/delve locations. Complete with an interactive room-by-room Dungeon Canvas and GM dossier for anything you generate. Play & Session Tools A tactical VTT map, in-app group voice chat, and a Session Hub for prepping and running games sit alongside your lore. No separate tool needed to go from "wrote it" to "ran it." Share & Collaborate Publish a read-only link so players can browse the parts of your world you choose to share, even while you're offline. GM-only notes and hidden content stay private automatically. Local-First Codex Cryptica stores your campaign world directly in your browser instead of a server you don't control. There's no account required to start building, and no vendor deciding when your data is available. Your vault syncs optionally to Google Drive for backup and cross-device access, but the source of truth stays local. You can work fully offline, and generators fall back to local tables when there's no connection, so a dead wifi signal never stops a prep session. Because nothing is locked behind a proprietary format, you can export your vault as a set of plain Markdown files at any time, or import worlds built in other tools. The result is a campaign manager that behaves like a personal notebook rather than a subscription service. Your world exists whether or not Codex Cryptica's servers do. Generators Cryptica's public generators are AI powered RPG content tools covering NPCs, factions, locations, items, quests, languages, full dungeon/delve locations, and more! Each generator is theme-aware, adapting output to fantasy, sci-fi, cyberpunk, horror, post-apocalyptic, western, steampunk, and other genres rather than sticking to one setting. Subsequent generations can be aware of previous content, and use that in its generation, enabling a full session of world building just from the generators. Generated results can be copied directly for use at the table, or saved into a local Codex Cryptica vault to become a linked entity in a larger campaign world, connected to the characters, factions, and locations already there. The generators is also available inside Codex Cryptica for world aware generations. /images/general-media/1785233708_A6DCZHA0.png Links codexcryptica.com - Platform website discord.gg - Discord server patreon.com - Support the project

D&D 5.5E (officially the 2024 core rules revision) is the modernized, updated evolution of the immensely popular Dungeons & Dragons 5th Edition (2014). The new and updated version of the system was released to coincide with the game’s 50th anniversary. Rather than replacing 5th Edition with a completely new "6th Edition," 5.5E refines and expands upon the existing 5E framework and most of the already existing mechanics. It is maintaining backwards compatibility with the  adventure and source books from 5th Edition. Description D&D 5.5E is the continuation of the iconic d20-based heroic fantasy roleplaying game. Players take on the roles of daring adventurers and the Dungeon Master (DM) describes the world, the events, controls the monsters and non-player characters, and referees the rules. The 5.5E revision was driven heavily by years of player feedback and data on how tables actually run the game. As a result, the new core rulebooks, the Player’s Handbook (September 2024), Dungeon Master’s Guide (November 2024), and Monster Manual (February 2025) are better organized, have clarified language and wording, and try to bring a stronger balance between spellcasting and martial classes. It plays exactly like the 5th Edition, but with tighter mechanics, fewer confusing edge-cases, and more tactical options for the players to have a more unique approach and feel to their characters. System Overview & Key Features Weapon Masteries This is a massive change to how martial classes are played in combat. Weapons now have specific "Mastery" properties, such as Cleave, Graze, or Push. This allows the characters to apply tactical, battlefield-controlling effects on their strikes rather than only rolling for standard damage on their turns. Subclass Standardization All character classes now choose their defining subclass at Level 3. This standardizes character progression and prevents the narrative weirdness of a Level 1 character instantly unlocking ultimate magical bloodlines before they've even adventured. Streamlined Conditions & Mechanics Historically clunky rules have been completely overhauled. For example: Surprise Instead of enemies randomly losing their first turn, surprised combatants simply roll their Initiative with Disadvantage. Exhaustion Replaced with a much simpler, cumulative 1-to-10 scale where each level of exhaustion simply subtracts from your d20 rolls and reduces your movement speed. Hiding Normalized so that successfully hiding essentially grants the "Invisible" condition, removing ambiguity for the DM. The Bastion System Introduced in the new Dungeon Master's Guide, this is an official customizable base-building system. It allows players to construct and manage their own strongholds. From arcane observatories to gambling dens. Apex Monsters & Upgraded Threats The 2025 Monster Manual expanded the roster to over 500 creatures, redesigning legacy stat blocks to be more dynamic in combat. It also introduced "Apex Monsters". These are a higher Challenge Rating versions of classic monsters (like an Apex Hag) designed to serve as more challenging bosses or enemies adding more danger and flavor to the basic version of the creature. Backwards Compatibility The core promise of 5.5E has been that you can still run older 5E adventure modules or campaign settings, even while adapting and using the newer ruleset and systems. If a table wants to bring a 2014 character class into a 5.5E game, the rules are there to accommodate, though it is highly encouraged to transition older characters to the updated 2024 mechanics, as the new systems bring  horizontal expansions to various classes and abilities. Additional links D&D Beyond Basic Rules - Free basic ruleset for the 5.5E D&D