One morning, I went to school and found a lot of garbage on the stairs of the teaching building. Then I had the inspiration to do this scene.

This scene only have 1 blueprint, blueprint can control Number of floors and Number of trash.

Demo video : https://www.bilibili.com/video/BV1g5411o75r?spm_id_from=333.999.0.0

UE4 stair scene - YouTube