CLEO vs Fallout 4 Script Extender (F4SE)
CLEO
cleo.liFallout 4 Script Extender (F4SE)
f4se.silverlock.orgSide by side
| Figure | CLEO | Fallout 4 Script Extender (F4SE) |
|---|---|---|
| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Windows | Yes | Yes |
| iOS | Yes | — |
| Plans published | 0 | 1 |
| Spec score · Game Mod Loaders | 7.6 (#14) | 7.8 (#9) |
| Purpose | CLEO is a scripting library that runs custom scripts in GTA games without touching game files. | F4SE is a modder’s resource that expands Fallout 4’s scripting capabilities. |
| Support | The site directs users to Discord to connect with other modders, get help, and share creations. | The readme directs installation and other problem reports to the F4SE subreddit and says the team cannot help with load order problems. |
Plans
In their own words
Fallout 4 Script Extender (F4SE)
Fallout 4 Script Extender (F4SE) is a free Windows resource for Fallout 4 modders who need expanded scripting capabilities. It extends scripting without changing the game’s executable files on disk. Listed interfaces include the Papyrus plugin API and hooks for Papyrus, Scaleform, and the classic script system. The homepage lists build 0.7.9 for Fallout 4 runtime 1.11.240. F4SE supports Fallout 4 releases from Steam and GOG, while MS Store, Game Pass, Epic, and other Windows Store versions are unsupported because those applications do not provide required APIs. Native code plugins require updates from their creators for runtime 1.10.980 and later, and plugins must have publicly available source code. Injection loads mods and may trigger poorly written virus scanners. Additional utilities include a command-line BA2 archive extractor and PEX script disassembler. The project is provided as-is and directs installation questions to its subreddit.