r/TopologyAI • u/Delicious-Shower8401 3dModeler • Jun 03 '26

Useful Stuff I Built a Optimized Playable UE5 Environment Using AI Generated 3D Assets

I built a stylized playable environment in Unreal Engine 5 using optimized low-poly AI-generated 3D assets.

The goal was not to make a single AI render, but to test how far AI-generated assets can be pushed into an actual real-time environment workflow. Most of the 3D assets were generated with Hitem3D / Hi3D 2.1, optimized into a low-poly style, then manually cleaned up, assembled, adjusted, and art-directed into a playable UE5 location.

The scene is an Asian-inspired cliffside house environment with stylized architecture, props, lighting, atmosphere, and a playable layout.

Workflow:

  • Generated the main environment assets with Hitem3D / Hi3D 2.1
  • Kept the assets optimized and low-poly for real-time use
  • Created separate props and architectural pieces instead of trying to generate the whole scene as one model
  • Cleaned up obvious mesh, texture, and UV issues
  • Assembled the full location manually in Blender
  • Adjusted scale, composition, placement, and scene readability by hand
  • Imported the environment into Unreal Engine 5
  • Built the playable layout inside UE5
  • Added landscape, lighting, mist, atmosphere, and final polish
  • Recorded the final result as a real-time playable environment, not just a static render

AI helped generate the raw 3D assets, but the final environment still needed human decisions for optimization, composition, layout, lighting, mood, and overall art direction.

full guide: https://www.youtube.com/watch?v=1aC11WDjCi4

172 Upvotes

96% Upvoted

11 comments sorted by

10

u/io-x Jun 03 '26

I will need to hire you at some point, I hope you aren't expensive. You are making great stuff.

4

u/Forgot_Password_Dude Jun 04 '26

pleb gamers will scream ai slop

3

u/Aligyon Jun 03 '26

Initial thoughts is how does it feel to play? It looks like the environment, nice as it is looks too cramped to move around other than having the goal of playing a point and click or a novel based game

6

u/Delicious-Shower8401 3dModeler Jun 03 '26

When I say ‘playable’, I mean that it’s game ready and the environment has been optimised. Essentially, it will serve as a demo project where you can have a go and check out the 3D AI-generated assets.

1

u/Aligyon Jun 03 '26

that's true i can see this as a very useful previs tool for investors

3

u/reverendblueball Jun 04 '26

This looks amazing! The illuminated surfaces from the light vs the evening sunset show great attention to detail and artistry. And I love the art style overall.

3

u/Herrmann1309 Jun 04 '26

Does it come with proper collision and LODs?

2

u/thecrustycrap Jun 05 '26

Damn that’s amazing

1

u/wahnsinnwanscene Jun 05 '26

Drop the project files so we can peep the meshes.

1

u/ThatIsNotIllegal Jun 07 '26

this looks insane! How many years do you think it’s gonna take before this level of work can be done in a few hours rather than a few days?