Building free & unsaved — log in to save your fights · go Pro for AI forging.
Build tonight's fight
Pick a party and a difficulty — we forge the encounter. No account, no setup.
Free forever · no account needed · got prep saved? Open the app →
The context-aware encounter engine for 5e
Know the fight will work before you run it.
Foeforge rates every fight against yourtable — who might drop, how long it runs, which lever to pull when it wobbles. When it's ready, export it in one click: Obsidian, Improved Initiative, fight cards & JSON.
Four layers of rigor. One glance.
Every edit re-rates the fight instantly — and the simulator plays it a thousand times before your players do.
Layer 1
The checks you already know
2014 XP thresholds, 2024 encounter budgets, and the Lazy Benchmark side by side — you see at a glance when they disagree about your fight.
Layer 2
Round-by-round math
A combat model plays out the hits and HP round by round, so the difficulty read updates with every edit — instantly.
Layer 3
1,000-fight simulation
Plays your fight a thousand times with real d20s — crits, failed saves, paralysis chains. You get TPK odds, who's likely to drop, and how swingy it runs.
Layer 4
It learns your table
Log a fight after you run it and the forecasts get sharper — tuned to your actual players within 3–5 fights.
The math is free. Forever.
Every check, every simulation, every export — free, no account walls. Pro adds AI craftsmanship on top.
Free
$0 forever
- ✓The complete Difficulty Engine — all four layers
- ✓1,000-fight simulation included
- ✓Full SRD bestiary + unlimited homebrew
- ✓Table Mode, post-fight logging, every export
Pro
$6 /month
- ✦AI Fight Guide — round-by-round tactics for your exact fight
- ✦Describe a fight in a sentence — get it built
- ✦AI statblock tuning
- ✦Token & portrait art for your creatures
- ✦Unlimited cloud sync
AI never touches the math and never runs unless you turn it on.