Real math, not gut feelings.
A Monte Carlo combat simulator that runs 150,000 fights to tell you, with about 99.5% accuracy, whether your encounter will wipe the party.
One-time purchase · Editable code · Free proof video on the store page
At a Glance
How It Works
Define the combatants
Party stats (27-point buy or 4d6), class features, feats, gear, and pre-built or custom monsters with class-based or user-defined behavior.
Run 150,000 battles
Initiative, 5E action economy, movement on a 2D grid, attacks, spells, AoE, conditions and spell slots, fought until one side wins.
Read the verdict
See how winnable the encounter is, compare encounters side by side, tweak, and re-run until the fight feels right.
See It Work
Built for the table
Your party on one side, the enemies on the other. Set it up, hit run, and watch the probabilities roll in.
- Monte Carlo, the same technique used in finance, physics and AI
- Class-based logic and user-defined AI
- AC capped at 18 to keep 5E balance
Pixel-art battles
Sound effects, pixel-art effects, a block-based 2D combat view and background music make testing fun.
- None of it changes the math
- Watch the fight happen, not just the numbers
What It Does
Models every combatant
Class features, feats, spell slots, gear and monster stat blocks, pre-built or custom.
Fights on a grid
Positioning, range, movement and attacks of opportunity on a 2D grid.
Resolves everything
Attacks, spells, AoE, DoT, conditions, resistances and immunities by 5E rules.
Clone in a click
Duplicate combatants to build groups, swarms or reinforcement waves.
~99.5% accurate
150,000 runs smooth out the dice, so the TPK prediction holds up at the table.
Compare & iterate
Tweak a single variable and re-run to see exactly what changed.
Ever wondered…
"Is this boss too strong?"
"Will the wizard get one-shot?"
"Does this AoE wipe the party?"
"What if the rogue actually uses Stealth?"
"What if the barbarian rages and the cleric saves slots?"
"How many goblins is too many goblins?"
Yours to Keep
No subscription, no tiers. $4.99 and it's yours.
Tinker with the rules, monsters and AI to fit your table.
Behaves like actual 5E combat, not an abstract damage calculator.
One Price, Once
D&D Combat Balancer
Every feature, no tiers, editable code. Not sure yet? Watch the free proof video first.
Questions
Is it a subscription?
No. One payment, yours to keep.
How accurate is it?
Its 150,000-run Monte Carlo approach predicts whether an encounter will cause a TPK with roughly 99.5% accuracy, because it models real 5E mechanics instead of simplified abstractions.
Can I use my own monsters?
Yes. Use pre-built monsters or make your own, with custom gear and feats, and duplicate any combatant in a click.
Do the sounds and pixel effects change the results?
No. They make the simulation easier to follow; the math underneath stays exactly the same.
Can I edit it?
Yes. Every Mad Tea Party tool comes with editable code so you can customize it for your own table.
Mac or Linux?
Windows only for now.
Know before the dice hit the table.
150,000 fights. One clear answer. $4.99, once.
Get D&D Combat Balancer · $4.99Roll with the party
Found an encounter that broke the math? Want a feature for your table? Come say hi. Every idea makes the next version better, and you own the code to tinker with yourself.
