Why my mesh good in preview mode but in game is too dark ?

I model a Iron Man Mark 46 in maya, did all rig, UV, texture in Substance Painter, but when I import to unreal is pretty good in preview mode, but when I put in my project, is getting to darker. And its not only this model, other models have this same problem. Anyone have this kind of problem could help-me ?

It`s because of the scene setup, if you want it to look the same as in previwer, add a cubemap to skylight (from SLS Capture scene to specified ) and tweak the intensity