Sketchup only for arcihtectures?

I think NO

Sketchup can be even use for game development in any squences.

However Sketchup missing for yet some ways such as the installation of lighting and smoke effects on fx-base, or the application of a UVW Map.

Game development is a very large market compared to the architecture design and I think this market is Trimbel not to be missed and invest synergies in here.