Babylon 5: I've Found Her is a space combat simulator game, based on the popular TV series Babylon 5. It uses 'true space physics', seen in games like Elite and I-War, which means that the ship will continue to move in one direction until the engines are turned on in another direction (unlike games like Wing Commander, where the ship handles like an airplane). The default campaign storyline (more can be downloaded from its official website) focuses on the Shadow War.
Danger and Opportunity is a pre-game campaign with 3 training missions and 5 full missions based on a standalone prologue.