@Palledine:
Twilight Imperium…haven’t tried that one yet. I’ll look into it.
Twilight Imperium – currently in its 3rd edition – would indeed be a good basis for a home-brewed Star Wars-type game because of its map tiles (and, if you want to use them, its plastic ships). The map tiles are hexagonal; most of them have a decorative red starfield at the back, and a front depicting either a planet or a space hazard (like an asteroid field or a supernova) or an empty blue starfield. Played by the game rules, these tiles are disposed in a circular formation, similarly to Settlers of Cataan, but there’s no reason you have to limit yourself to that circular configuration if you want to create your own game.
A few years ago, basically just for the fun of it, I created a huge elongated galactic map on my 36" x 96" A&A customized gaming table, using two copies each of the Twilight Imperium 3rd edition base game and of its two expansions (titled Shattered Empire and Shards of the Throne). I can’t recall how many tiles that added up to, but it was a lot. I put half of them on the map face-up, and half of them face-down. I clustered the face-down ones (the ones showing a red starfield) at the centre of the table, mixed with a few of the planetary and space hazard tiles, to depict the centre of the galaxy; I laid out the rest of the tiles, including the empty blue-starfield ones, on the left and right sides of the table to represent the galactic arms. There were enough tiles to practically fill the whole table, and the map looked pretty cool in my opinion. I never did get around to creating any game rules for using this map, however. In choosing where to put which tiles, in fact, I didn’t take any game play ideas into considerations; I just wanted to figure out what looked nice, and to create a mix of planetary tiles, hazard tiles, and empty-starfield tiles that was suitably varied in all the regions of the map.