Encounter Generator
Generate creatures. Build encounters. Remember what happened.
RANDOMIZE! does not play the game for you. No attack rolls, no damage, no initiative, no combat simulation. It gives you creatures, reference information and encounter ideas — the table plays it out with real dice, and afterwards this page remembers who you met and what happened.
Environment
Only creatures that make ecological sense in the chosen environment are offered — marine creatures for the sea, fliers for aerial encounters, and so on.
Party (optional)
These only nudge which challenge ratings appear. This is RANDOMIZE! guidance, not an official difficulty formula — the SRD 5.1 does not include encounter-building maths, so judge the fight yourself.
Encounter type
Creature filters
Loading creature reference data…
📜 Session Log
Session encounters
Nothing logged yet. Generate an encounter and choose Add to session.
No account, no cloud, no tracking. Your session lives in this browser tab only and disappears when you close it — save it as a .randomize file to keep it. This file is separate from your dashboard and theme settings file.
RANDOMIZE! — Encounter Log
Session record
Session summary
- Total encounters: 0
- Total creatures: 0
Creature statistics come from the System Reference Document 5.1 by Wizards of the Coast LLC, available under the Creative Commons Attribution 4.0 International Licence. RANDOMIZE! is not affiliated with or endorsed by Wizards of the Coast.