Jet Force Gemini modding

Make new planets, levels, enemies, music, weapon tuning, scripts and texture packs for Jet Force Gemini: Recompiled , the PC port. Build them in JFG-Studio , model levels in Blender, or write code against the port’s modding API.

JFG-Studio with the Zephyra example open: the Hierarchy on the left, Zephyra Landing in the Scene, the Inspector on the right and the Prefabs at the bottom — JFG-Studio with the example world open: Zephyra Landing, its ant squad selected.

Where to start

Getting started Your first planet The example world What can be modified Blender add-on API status

Three ways to make a mod

Way	For	You write
JFG-Studio	Levels, planets, enemies, music, triggers, weapons	Nothing: Studio builds the pack. Lua is optional.
Lua scripts	Game logic in a pack: messages, doors, spawns, planets, weapons	Lua 5.4, in Studio’s Scripts window or any editor
C code mods	Anything else: hook or replace any game function	C, compiled for the N64’s CPU

Tutorials

A stronger pistol Your first script Custom music A new enemy look A galaxy of your own Change a stock level A first code mod An HD texture pack

Your own copy of the game only. The tools read your own US ROM. Never share the ROM, Studio’s catalog, or anything exported from them (stock models, textures, tracks). Packs Studio builds carry only your own content plus references to the game’s, which the port fills in from each player’s own copy.