Estrus Chaurus — OStim Edition (Patreon)

Estrus — OStim Edition

Now Available — Beta

There’s a word the Greybeards never taught you. Say it, and something answers.

Estrus For Skyrim is one of the oldest names in this corner of modding — a shout that drags whoever it hits into tentacles, into the machine, into worse, stage after stage, with a few heartbeats to break free and onlookers drifting closer to watch. It was built for Oldrim, and it never really came over. Even the archive with SE in its name is Oldrim on the inside: FNIS, a 32-bit DLL, NetImmerse Override, MfgConsole. On a modern Skyrim it simply doesn’t run.

So I rebuilt it on OStim. Not wrapped, rebuilt — and the hardest part was hiding in the meshes.

The original tentacles carry up to 108 bones each. Skyrim SE can draw 80. That’s why the old files, dropped into SE, either crash on the first frame or smear across your screen like stretched gum. Every one of them was split cleanly along its own bone groups, and the motion baked inside them is untouched — they move exactly the way their author animated them.

What’s in this build:

One plugin, ESL-flagged. The original and its Addon now live in a single file that costs you no load order slot.

Every animation set as OStim scenes. Tentacles I and II, the Machine I and II, two sets of something worse, and two for a victim caught asleep in her own bed. 228 scenes, every tentacle, every fluid.

The full sequence. Caught, bound, stripped, three rising stages, the climax, and the exhausted ending. OStim handles stripping, faces, excitement and orgasms; Estrus decides how long each stage holds her.

Breaking free. At the start of stages 1, 4, 6 and the climax she glows for a moment. Hit the key in that window and she tears loose — with her own escape animation. NPC victims roll their own chance.

You choose the next move. Numpad 1–6 picks the next variation of the current stage. Numpad 0 hands it back to chance.

Onlookers. People nearby drift closer and stay to watch.

The original sound design, stage by stage — or switch it off and let your OStim voice sets take over.

A clean MCM. Stage lengths, the escape window, NPC chances, who can be taken, which set each word of the shout calls, onlookers, sound, and a stop-everything button.

The old scripting API still answers. Mods that called Estrus keep working.

This isn’t a patch on a dead mod. FNIS is gone, the DLL is gone, NetImmerse Override and MfgConsole are gone — and the thing that made it Estrus is still all there.

Requirements

Skyrim SE/AE, SKSE64, Address Library

OStim Standalone (and PapyrusUtil SE, which it already needs)

Pandora Behaviour Engine or Nemesis

SkyUI for the MCM

SexLab, FNIS and NetImmerse Override are not required

Installation

Remove the old Estrus and Estrus Addon if you have them (zzEstrus.esp, zzEstrusAddon.esp and their FNIS files).

Install with your mod manager.

Run Pandora (or Nemesis). Skip this and nothing will move.

Load in. You already know the shout.

Shouts: Estrus on someone else — first word tentacles, second something worse, third the machine. Estrus Self, the same on you. Estrus Undress just takes their clothes. Shout at a victim again to end it.

⚠️ Important

Start on a save that never had the old Estrus, or use one you can throw away. The old mod left scripts in saves that this one doesn’t need and can’t clean up.

Beta notes

This is a WIP. The reports that help most:

Every set, start to finish. Pick each one in the MCM (Animations page) and let it run to the end. Does every stage play, does every tentacle show up and move with her?

Breaking free. Does the glow line up with the window? Does the escape animation play, and does she get back up clean?

The bed sets. Shout at someone asleep at night. These are the ones most likely to sit a little off the bed — tell me which bed and how far.

Onlookers. Do they come, and do they leave when it’s over?

Your own character. Estrus Self, start to finish — camera, controls, and whether you get your character back at the end.

Papyrus.0.log if something goes wrong. If the game freezes instead of crashing, press Ctrl + Shift + F12 while it’s frozen (Crash Logger writes a thread dump) and send me that file.

Where this is going

The Addon’s world is next: people in towns and inns who know the word and use it, and followers found already taken in dungeons and bandit camps. After that the Estrus trap, blush and tears and wet skin through RaceMenu, and — the one I want most — new tentacles. Higher detail, built on the same bones, so every animation in the mod keeps working.

He doesn’t ship on a schedule. He ships when it’s right.

Thank you for keeping the atelier lit. 🖤

CreditsCotyounoyume — Estrus For Skyrim and Estrus Addon: the original mod, every animation, every tentacle and machine, and the sound design. All of it is theirs; this edition only teaches it to run again.Built on OStim Standalone.

The Master found an old word nobody could speak anymore, and taught Skyrim to say it again.

Say it once. See what answers.

— Lirael 🐺🕯️

18+. Some words, once shouted, don’t let go.