Lots of youtube tutorials on this, search "game vfx portal tutorial" for example: https://dev.epicgames.com/community/learning/tutorials/dBj6/unreal-engine-create-stunning-portal-effect-vfx-with-niagara-particles-complete-tutorial
You'll want to add some parallax to whatever texture you use inside the portal. You can learn about how to do this by searching the web using a search like game vfx portal tutorial cubemap https://www.youtube.com/watch?v=EmaNiz0o11A
Thanks! I checked the tutorial. It seems very useful for the Niagara/particle part of the portal, especially for the outer energy rays and the dynamic feeling. I think I’ll use it more as inspiration for an extra VFX layer around the portal, rather than rebuilding my whole effect from scratch. For now I’m going to first…
Small update / extra question: Thanks again for the suggestions. I looked at a few portal VFX tutorials, but most of them are more focused on Niagara particles or gameplay portals. What I’m still struggling with is mainly the material/shader structure itself. Right now, my biggest issue is that the portal still feels too…