What is BattleCast?
BattleCast is a browser-based D&D 5e encounter simulator. You place monsters and heroes on a tactical grid, then watch the combat engine resolve initiative, movement, attacks, spells, conditions, and victory.
Free D&D 5e encounter simulator
D&D 5e Encounter Simulator
Build encounters with 300+ 2024 SRD monsters and 12 hero classes, place them on a tactical grid, then watch the fight or run Monte Carlo simulations to test the balance before your session.
- 300+2024 SRD creatures
- 12hero classes, L1-10
- 10KMonte Carlo trials
A tactical D&D 5e combat simulator, not a static encounter calculator
BattleCast resolves initiative, movement, reach, opportunity attacks, saving throws, conditions, spell slots, class features, resistances, immunities, and area-of-effect targeting. It is built for DMs who want to know what an encounter is likely to do at the table.
- D&D 5e encounter simulator
- Monte Carlo combat analysis
- 2024 DMG difficulty ratings
- Party balance testing
- Homebrew monster testing
Common questions
Can it test whether an encounter will TPK my party?
Yes. BattleCast can run hundreds or thousands of Monte Carlo combat trials and report win rate, survival rate, rounds to victory, damage dealt, and which creatures usually die first.
Is BattleCast just an encounter difficulty calculator?
No. It includes encounter-builder math, but the main difference is simulation: positions, movement, opportunity attacks, area effects, class features, and monster tactics all affect the result.