The game lobby screen was created by maximizing the quality of mobile in-game assets in the Unity engine. It was a cheap way of making it. Part of the particles, skyboxes was solved with Asset store.
Battleship Kongo and Nagato, cruiser Takao
Battleship Gneisenau
Battleship Hood and Warspite
Battleship Bismarck and cruiser Prinz Eugen
Admiral Graf Spee and Ajax