As the title says, just close your eyes and listen to this and tell me if it wouldn't suit a Mass Effect game, if not as a main song, as a piece of its soundtrack...

Well, you might watch the actual game in this video too if you rather do: 

http://youtu.be/rL70eUSIowI

*instert joke about a flawed link and hearing nothing*

It does have kind of a similar ambience to Mass Effect. I can almost picture the Normandy lifting off in the intro or something.

Here's another cool song that seems custom made for Mass Effect, one that makes me imagine Shepard and his squad locked in the desperate final battle against the Reapers (but make sure not to watch the video, as it totally ruins the feeling)

When i close my eyes i see darkness so i can't go on and read or click on your video since my eyes are closed!

That's like the weirdest thing ever. It kindda looks as something Travis Touchdown would watch before turning the tv off as he was zapping from his couch on his motel room on a hot saturday afternoon.