star wars legion
GameMats sells Game Mats to play on and a number of STL files for various games including Star Wars Legion and other Sci-fi games.
Awesome Star Wars Legion terrain for your gaming table. Matt is also the brains behind the Loot Box terrain on Thingiverse. His models are also very sci-fi looking beyond Star Wars specific.
Imperial Terrain makes awesome terrain for Star Wars Legion. Their tagline is Imperial Terrain – “Terrain for your Galactic Civil War”. This is the best site to find purely Imperial Assault Terrain. It also works for other Sci-Fi games as well. If you don’t own a printer, he also prints and ships pieces.