What it is
Path of Building for Last Epoch (PoB-LE) is an open-source fork of the original Path of Building from PoE 1, adapted by the community to Last Epoch mechanics. It's maintained by Musholic on GitHub with regular commits (last Apr 2026). Two usage modes:
- Desktop: download the binary from GitHub, run it offline on Windows/Mac/Linux.
- Web: lastepochplanner.com runs the same logic in browser without install.
Both versions read the same mechanics and produce the same numbers. The difference is only workflow: desktop is more responsive for rapid iteration; web is more convenient for sharing builds via URL.
It's free and MIT-licensed. Accepts contributions via PR on GitHub.
What problem it solves
Web planners (Last Epoch Tools, Maxroll, ArreatSummit) are good for visualizing your build and showing final stats, but they approximate complex calculations:
- Ailment stacking (ignite, shock, bleed)
- DOT multipliers
- Conditional damage (vs full life, while channeling, on crit)
- Defense layers computed with the correct order of mitigations
PoB-LE simulates these with PoE PoB's precision. If your build depends on mechanics like "stacking shock for DPS amplification," the web planner gives you an approximate number; PoB-LE gives you the real one.
For crafters and theorycrafters, this difference matters — the gap between tier 6 and tier 7 on a critical affix can be 30% DPS, and only PoB calculates it right.
How it differs from Last Epoch Tools' planner
- PoB-LE: simulation depth. Exact DPS computations, side-by-side item comparison, support for obscure mechanics. Steep learning curve (UI inherited from PoE PoB).
- Last Epoch Tools planner: quick visualization and community sharing. Final stats accurate enough for 90% of cases. Friendlier UI.
Serious theorycrafters use both: LE Tools to iterate visually, PoB-LE to validate numbers before deciding to spend gold on crafting.
What people use it for
Compare 2 items side by side: in PoB-LE you can equip item A, see DPS, swap for item B and see the exact delta. Critical for picking between unique alternatives or between affix tiers.
Optimize crafting target: before spending runes/glyphs on a base item, simulate the result in PoB with target affixes and check if it hits the breakpoint you need.
Theorycraft outside the game: build entire characters without being in-game, export the result to use later.
Verify creator claims: when a YouTuber says "this build does 50M DPS," import it into PoB and verify locally that the numbers check out.
Plan blessings with depth: the planner lets you simulate which blessings to prioritize seeing exact impact on final stats — more useful than the "max-tier always" heuristic.
Who it's NOT for
- Newcomers to LE: the UI inherits PoB PoE complexity. If you never used the original, there's a real learning curve. Start with LE Tools.
- Players who only want to copy a build: if you just need to read Maxroll and replicate, PoB is overkill. For implementing published builds, web planners are enough.
- Mobile-first: desktop doesn't run on mobile and web is hard to use on touch.
- Spanish speakers who need translated UI: PoB is English only, no localization.
How it's used in practice
Web version (no install): go to lastepochplanner.com → start building directly in browser.
Desktop version: download the ZIP from github.com/Musholic/PathOfBuildingForLastEpoch/releases → extract → run the
.exe(Windows) or equivalent binary.New build: pick class and mastery → assign passives on the tree → define active skills with their passives → equip items with specific affixes.
To compare builds: import two builds in separate tabs; PoB shows stat delta when switching between them.
To share: on web, copy the build URL; on desktop, export a "build code" you paste into Discord/Reddit and another user imports.
To verify someone else's build: copy a creator's build code → import → run the simulation → compare with the DPS the creator claims.
Honest limitations
Steep learning curve: the UI isn't optimized for LE from scratch — it inherits PoB PoE layout that assumes familiarity. Newcomers need a tutorial.
Doesn't simulate all endgame: some very LE-specific mechanics (exact corruption stacking, dynamic blessing rolls) are approximated. Precision is high but not perfect.
Updates depend on the community fork: when a balance change drops, Musholic and contributors update the fork. There's a 1-2 week lag vs patch day 1.
No integrated DB like LE Tools: to look up item info, complement with Last Epoch Tools or lastepoch.tunklab.com.
No official cloud save system: on desktop, your builds live on disk. Manual backup recommended.
Web version occasionally slow: simulation runs in browser JS, very complex builds can take 2-3 seconds per recalc.
How to start
Web vs desktop decision: if you want easy URL-based build sharing, web. If you want maximum performance and offline, desktop.
Web: lastepochplanner.com → click New build → pick class → you're in the planner.
Desktop: clone the repo or download a release zip from github.com/Musholic/PathOfBuildingForLastEpoch → README explains install.
Recommended tutorial: the repo has a basic tutorial in its README. For advanced usage, search YouTube for "Path of Building Last Epoch tutorial".
Start with a known build: import a creator's build code from Maxroll → study how it's structured → modify from there. You learn faster than starting from scratch.
To report bugs: the GitHub repo accepts issues. Musholic responds frequently.
To contribute: PRs welcome. The project is Lua + minor scripting; familiarity with original PoB helps a lot.
