which program to use for house/world creation

i am trying to do a open world. i have building assets like walls, grounds. i’m making a house through unreal engine actors. but i have a size problem, i have 2 questions, first; can i see how cm x cm instead of scale = 1 thing, second question is; should i use unreal engine create an actor and do a house inside it or should i create the house in blender, i am a c++ developer and i don’t understand this kind of things

Hey there @BioFrost.in! So generally you tend to make your assets outside of unreal and import them in so you can work on the scale you’d prefer and then import them at the correct size in engine. Scale is mostly used purely relatively so it’s always going to just show you for example a scale of 2 is 2 times as large as it’s base size.

However if you’re trying to gray box out a level just to get a feel for things, just import the correct scale for your player/people and build relative to that side.

Alternatively if you’re working with something that needs to be hyper precise, I always recommend creating it externally then importing.