IMPORTED ASSETS

Door: https://sketchfab.com/3d-models/portal-2-door-ab36b2a2d73a49bca7c1eb4a0f9ebe88
Cube: https://sketchfab.com/3d-models/portal-cube-b67becc862054d9fab781b3e4030a1af
Button: https://free3d.com/sv/3d-model/portal-button-65605.html
Cube Dispenser: https://www.cgtrader.com/free-3d-models/various/various-models/portal-cube-dispenser
Portal Gun: https://free3d.com/3d-model/portal-gun-from-portal-2-74735.html
Skybox: https://www.unrealengine.com/marketplace/en-US/product/good-sky?sessionInvalidated=true