Legends World

The Vacuum is a sci-fi adventure game which tells the story of a couple traveling home inside a cargo ship when a pair of explosions set off a chain of events that will forever change both of their lives. The final outcome is influenced by key decisions made by you during the course of your investigation, though most of the endings contain only minor variations in comparison.

http://seriousbusiness.co.cc/files/The%20Vacuum.zip

sadly i've not had time to play this one i've got it on my hard drive somewhere but really i like the multiple endings idea