Encounter Builder
Build balanced encounters in seconds. Browse the full monster compendium, set quantities, and see instant difficulty ratings based on your party's level.
Search Monsters
Browse 2,800+ creatures from the SRD. Filter by type, CR, size, or search by name. Your homebrew monsters are included too.
Set Quantities
Add monsters to your encounter and adjust their counts. Mix and match creatures of different CRs for dynamic fights.
Check Difficulty
See instant difficulty ratings — Easy, Medium, Hard, or Deadly — calculated from DMG XP thresholds for your party's size and level.
Auto-Calculated Difficulty
The encounter builder uses the Dungeon Master's Guide XP threshold system. As you add or remove monsters, difficulty updates instantly.
Easy
625 XP
Medium
1,250 XP
Hard
1,875 XP
Deadly
2,500 XP
Example: 4 players at level 5. Thresholds based on DMG tables with multipliers for monster count.
Built for Dungeon Masters
Full-Text Search
Search monsters by name with Meilisearch-powered fuzzy matching. Find the right creature instantly.
Advanced Filters
Filter by type, size, challenge rating, and source. Narrow down exactly what you need.
Homebrew Support
Your custom homebrew monsters appear alongside the compendium. XP auto-calculated from CR.
Run as Combat
Launch any encounter directly into the combat tracker. Monsters are pre-loaded with stats and HP.
Included with the Dungeon Master plan.