http://www.ambrosiasw.com/games/evn/
Its game called Escape Velocity Nova. I remember back in High school I used to play the original on a Mac at a friends house after school. This game was so much fun. You start out with a simple Star Trek like shuttle and do missions and trade routes for cash. Get cash, get better ships and upgrades. Really open ended too.
There are 6 possible storylines to follow, each one following one of the factions involved in the game. Though I will admit that Im still not sure how you end up getting a particular one. Each storyline is random through the game depending on some choices you make. ALthough there are no movies in this game other than the gambling video's it has a very deep story line to follow for each faction. Federation, Auroran, Polaris, Rebellion, Vello-Os, and Pirates. As well as several other smaller storylines to follow that allow you to get different ship upgrades.
Another thing that was fun about this game is that you can capture ships once you register. Also you can conquer worlds and demand tribute from them. Course you have to defeat their defense fleet first =P
Also the amount of plug-ins avaiable from their site is enourmous so there are quite a few mods you can pop in and have fun. Anyway Ive had soooo much fun with this game even if it is top down perspective. The games depth and open endness is superb for this type of game. Anyway if theres enough of a demand for it ill post up my registration key for people to use so they can register their copy. Just send a PM and Ill send it to ya.