You wake up in Lifepod 5 on planet 4546B, and you're not alone: Wheatley, Aperture Science's least intelligent personality core, is clipped to the pod wall, calling "Hello? Anyone in there?" Pick him up and he floats beside you for the rest of your survival.
What's in it
Wheatley as your companion. He drifts and bobs beside you underwater and on land, never gets in your way, and rides along while you pilot a vehicle.
His real voice and subtitles. 60 of Wheatley's own Portal 2 lines, picked for Subnautica moments: diving into the dark, running low on oxygen, taking damage, picking things up, respawning, and plenty of idle rambling.
His real animations. Idles, blinks, nods, glances, eye pops and a terrified shiver, all from Portal 2. His eye glows purple.
Scared of leviathans. When a Reaper, Ghost, Sea Dragon, Stalker, Sand Shark, Warper or another big creature gets close, he hides behind you (and tells you to run).
Aperture salvage. A Weighted Companion Cube rests on the seabed near your lifepod, and more Companion Cubes and toppled sentry turrets are scattered across the world. Hold the Scanner on one to scan it.
How Portal 2 is in it
Nothing from Portal 2 is shipped with this mashup. While Subnautica runs, it reads Wheatley's model, textures, animations, voice lines and subtitles, plus the cube and turret models, straight from your own Portal 2 install. You need both games; Melty sets everything up when you press Play.
Single-player.
Credits
Wheatley, the Companion Cube and the sentry turret: Portal 2 by Valve, loaded from your copy. Subnautica by Unknown Worlds. Unofficial fan mashup, not affiliated with either.
Runs on BepInEx 5 with HarmonyX (installed by Melty).
Made with AI assistance (Claude) using the universal-modder toolkit. Mod code under GPL-3.0.
