Whole level instance?

is there a way to make an instance from a whole level?
because i need the same (big) space to be repeated about 15-20 times (with some small changes), so i’m looking for a memory efficient way to do that.

my level is counstructed almost entirely of walls (geometry-box brushes) and videos (the videos are what changes in different levels).

It depends on what you Need. You can do it like an endless runner game. Use for this levelstreaming. You can add as many Level as you want. You just load the new repeating Level and unload the old one.

thank you very much!! i will research level streaming and get back here if i have some more questions!

How do I repeat the same Sublevel inside the Persistent Level?