OpenCAGE is an extensive open-source modding toolkit for Alien: Isolation which unlocks the ability to fully customise and build new levels, missions, modes, characters, props, weapons, behaviours, UIs, and more!
Download for free from Steam, and explore the documentation to learn more.
Open any level and fly through it. Click anything you see to find it in the level’s scripts, move and rotate it with the gizmo, or drag new content in straight from the Composite Browser.
Alien: Isolation runs on thousands of CATHODE scripts. Open any of them as a flowgraph laid out over pages, then rewire it, delete what you don’t need and tune any parameter in the inspector.
Drag any of the game’s entity types from the Entity Palette onto a graph and link up their pins. Trigger volumes, markers and props go straight into the world from the Viewport’s Create menu.
With Live Link connected, Show Activity lights up each link as it fires and counts every call on its pins. Trigger any method from the inspector to test a script without playing up to it, set breakpoints on nodes to stop the game’s scripts and step through them, and put values on screen in game with debug text and position markers.
Open any CAGEAnimation to edit its tracks on a curve editor: drag keys and bezier handles, add new tracks, and switch on Animation Mode to scrub the result in the Viewport.
Preview any clip on its character’s own model, export clips or import your own, and edit the animation trees that blend them together.
Live Link connects OpenCAGE to the game while it runs. Place and move props, change lights, tweak scripts and call methods, and the game updates without a reload. The game camera can follow the Viewport, so you see every edit from the same angle.
Import your own models with a 3D preview and a scale check, then browse, export and edit any mesh in the game from the Model Editor.
Change a material’s shader, samplers and parameters, and browse, export and replace any texture in a level.
Start a new level, fill it with composites from other levels or your own imported geometry, and let Save and Build generate its lighting, navmesh, collision, cover and sound.
With the Debug Menu ticked in Launch Game, fly its free camera anywhere in the level, drop camera track nodes along the way and play them back as one smooth move. The Cinematic group also sets depth of field and colour, hides the HUD and takes screenshots.
With Debug Menu ticked in Launch Game (it is by default), press F7 in game. Draw every character’s view cones and alertness over the game, show the nav mesh the AI walks on, and point a crosshair at anything to read its collision, materials and model.
Create a Mod lists everything you’ve changed, so you choose exactly what goes in. Players install it with the Mod Manager, which also combines, updates and removes mods for them.
Dedicated editors for the game’s configuration: the alien’s behaviour settings, character asset sets, inventory items, crafting recipes and every line of localised text.
Open the behaviour trees that drive the alien, androids and humans, and edit them node by node.
OpenCAGE is a hobby project and is not affiliated with Creative Assembly, SEGA, or Feral Interactive.
Alien: Isolation must be purchased and installed to use OpenCAGE.
Please see THIRD-PARTY-NOTICES.md for any embedded library/code licenses.