A canvas that reads like the game
Drag focuses around a war-room board. Wire prerequisites by dragging a node’s port; lines route orthogonally and mutually-exclusive focuses get a red link — WYSIWYG, with the real in-game art on every node.
v0.3.4 · pre-alpha Build Hearts of Iron IV
Build Hearts of Iron IV
focus trees without touching a text file.
A desktop editor for Hearts of Iron IV and Millennium Dawn submods — a visual node graph, the real in-game art, and byte-identical exports. Or let an AI build the tree for you.
canvas · LBA_focus
Byte-identical HOI4 exports, BOM and all
125 importable Millennium Dawn trees
~1,000 idea modifiers, grouped & searchable
1,700+ opinion modifiers with live values
985 techs, grouped by research folder
498 country tags wired into every picker
The whole focus tree, without the syntax.
Real in-game content, auto-detected
Focus Forge finds your HOI4 + Millennium Dawn install and pulls in the actual icons, leader portraits, flags, states, techs and modifiers — no manual setup, no placeholder art.
Structured authoring, zero syntax
Build rewards, availability conditions, ideas, decisions, events and country data from searchable pickers backed by real MD data. Drop to raw script only when you want to — and preview exactly what gets written.
Or let an AI build it
Flip on the AI Bridge and ask in plain English. Focuses, ideas and events appear live on the canvas as the assistant works. Local-only, off by default, fully undoable.
AI Bridge · new in v0.3.4 · pre-alpha
Describe the branch. Watch it appear.
Flip on the bridge and connect an AI assistant like Claude over a local connector. Ask in plain English and the focuses, ideas and events build themselves on the canvas — you stay in control and can tweak or undo anything.
- Local-only. Never goes online; off by default.
- You drive. Everything the AI does is editable and undoable.
- MD-aware. Ask it to follow Millennium Dawn conventions.
you
Add a 4-focus war-economy branch under my political opening, with a mutually-exclusive choice at the end.
focus forge
+ focus LBA_war_economy + focus LBA_state_industry + focus LBA_mobilize + focus LBA_total_war ⇄ LBA_market_reform ✓ 5 focuses, 1 mutex · 0 validation errors
A canvas that reads like the game.
Bracket-framed nodes, orthogonal prerequisite lines, red mutually-exclusive links, and the real in-game art — so you can judge the in-game look while you build.
Forge your first tree.
Free, ~61 MB, installs per-user with no admin rights on Windows 10 / 11 (64-bit).