Curated collection of external tools and resources for Game Masters
Complement Circle of One with these powerful RPG tools
A comprehensive collection of random tables for D&D 5e and other RPGs. Generate encounters, NPCs, loot, and more with powerful filtering and customization options.
A collection of random generators for D&D including dungeons, treasure, NPCs, and more. Fast, lightweight, and perfect for quick inspiration during prep or at the table.
A comprehensive random generator for dungeon room contents and atmosphere. Generate room purposes, occupants, treasures, traps, devices, and atmospheric details. Perfect for quick dungeon stocking and improvisation at the table.
A versatile online dice roller for all your tabletop gaming needs. Roll standard dice, custom dice sets, and complex formulas with an intuitive interface.
A powerful encounter builder for D&D 5e. Design balanced combat encounters by adjusting monster types, quantities, and difficulty levels with real-time XP calculations.
A comprehensive dungeon management tool for Game Masters. Track encounters, manage monster stats, monitor initiative, and organize dungeon layouts. Perfect for running complex dungeons with multiple encounters and environmental hazards.
A powerful creature and NPC database tool for tabletop RPGs. Browse, search, and customize monsters, creatures, and NPCs with detailed stat blocks, abilities, and loot tables. Perfect for quickly finding the right creature for your encounter.
A comprehensive worldbuilding platform for creating and organizing campaign settings. Build maps, write lore, manage characters, and collaborate with other creators.
Build balanced D&D 5e monsters and encounters in seconds. Replace Challenge Ratings with intuitive Monster Levels, assign combat roles, add traits and powers, and export to PNG, JSON, or GMBinder. Works on desktop, tablet, and mobile.
The official Level Up: Advanced 5th Edition tools site. Access searchable databases of spells, magic items, monsters, and rules. Includes encounter generators and character building tools.
The official character builder and campaign management tool for Level Up: Advanced 5th Edition. Create characters, manage parties, build encounters, and collaborate with other players and narrators.
Circle of One provides integrated tools for character generation, backstory creation, and encounter design. These external resources complement our tools with additional tables, generators, and utilities for comprehensive campaign management.
All external resources are maintained by their respective creators and communities. We recommend exploring these tools to find the perfect fit for your campaign style and needs.