[Expack2]

I've been trying to find an old game which I've only played the demo of. It starts out with the hero (I think he was a janitor, NOT Roger Wilco) being trapped on a ship being taken over by aliens. There's one scene in the demo where one of the aliens is doing something to some ship equipment (I don't know whether the alien's sabotaging the equipment or draining energy from it). It's possible to escape the ship by using the hangar bay, but when you go there, you immediately go to some console which I believe summons a certain craft.

If someone knows what game this is, I'd really appreciate it if you could post here saying what the game is!