Ll Fourplay F4se Plugin
The most common source of confusion for modern modders is the relationship between FourPlay and AAF (Advanced Animation Framework) .
However, AAF did not start from scratch. In its earliest days, AAF actually relied on the LL FourPlay F4SE Plugin for its low-level animation injection. You would install AAF and the FourPlay plugin together.
Eventually, AAF developers created their own native F4SE plugin (often referred to as the AAF_ plugin). This new plugin performed the same functions but with greater stability and modern features. ll fourplay f4se plugin
| File | Purpose |
|------|---------|
| FourPlay_Common.f4se | Plugin DLL (placed in Data/F4SE/Plugins/) |
| FourPlay_Main.esm | Master file containing framework quests and variables |
| FourPlay_Animations.esp | Default animation pack |
| F4SE loader | Required to launch the game so the plugin loads |
A number of mods from the 2017-2019 era rely on this plugin. Examples include (but are not limited to): The most common source of confusion for modern
Note: The modern standard for adult animation in Fallout 4 is now AAF (Advanced Animation Framework). If you are starting fresh, consider using AAF instead, as it is actively maintained. Use LL FourPlay only if a specific, irreplaceable mod requires it.
Installing this plugin requires more care than a standard Nexus Mods download. You will need to manually place files into your Fallout 4 root directory. Always back up your Data folder and your save games before proceeding. However, AAF did not start from scratch
When active, FourPlay adds over 150 new Papyrus functions. The most impactful categories include:


