on GitHub provides robust local management for focus tree scripts. Learning the Script Official HOI4 Wiki

A unique internal name used by the game (e.g., FRA_communist_revolution ). Do not use spaces.

Once your mod is stable:

Move the localization file into the localisation/english/ folder (or your target language folder). Step 3: Test and Debug

Full control over scripting, allows for custom triggers and complex rewards.

Select which focus must be completed before the current one can be started. The tool will automatically draw a connecting line.

Closest to a "developer experience." Cons: Very buggy, not recommended for newcomers.

Experienced modders often recommend a hybrid approach to ensure stability:

Visually draw lines to establish prerequisites, mutually exclusive choices, and bypasses. Step-by-Step: Building Your First Tree 1. Setting Up Your Project

else = add_opinion = target = SOV modifier = positive_opinion

| Mistake | Consequence | Fix | |---------|-------------|-----| | | Buttons become unclickable in-game | Keep X/Y coordinates 150+ pixels apart | | Forgetting localisation | Game shows focus_MY_FOCUS_NAME | Always fill the Name and Desc fields | | Infinite prerequisites | Focus chain breaks | Use or = ... instead of nested and | | No fallback icon | Red question mark appears | Assign a generic GFX_goal_default | | Mismatched country tag | Tree doesn’t load | Double-check tag in common/national_focus/*.txt line default = no |

Visually position your focus nodes on an X and Y grid.