D&D 2024 encounter lab

Tune challenges by simulating the fight, not guessing the CR.

Build custom monsters, assemble the party, queue encounters, and run large-scale combat simulations to see how dangerous a creature really is.

Setup Party and monster roster

Method Monte Carlo trials

Ruleset 2024 SRD baseline

Step 01

Party Bench

Choose the adventurers that every simulated battle will use.

Party level

Party size

Ability method

Step 02

Search, filter, and queue the creatures the party will face. SRD 5.2 — 327 monsters.

CR range

Type

Size

Step 03

Pit the party against the encounter. Watch one battle round-by-round or run Monte-Carlo batches for a CR estimate.

idle

Party

—

Encounter

—

battles

Inside lair Surprise:

Result

no battle run yet

Battle Log

awaiting first battle…