Here's something:
In Zero Mission, it's easy to say that maybe the Wrecked Ship is the Pirate ship that appears later... but that isn't the case. You can find the Wrecked Ship in Zero Mission, but you don't get to explore all of it:
Area in front of Ship.. notice the platforms
ZM: http://i29.tinypic.com/iw56o7.jpg
SM: http://i25.tinypic.com/j0hbg8.jpg
Also:
Notice how in ZM this architecture exists nowhere else, and resembles the Wrecked Ship
ZM: http://i32.tinypic.com/fus55x.jpg
SM: http://i26.tinypic.com/30maj9i.jpg
In Zero Mission, it's easy to say that maybe the Wrecked Ship is the Pirate ship that appears later... but that isn't the case. You can find the Wrecked Ship in Zero Mission, but you don't get to explore all of it:
Area in front of Ship.. notice the platforms
ZM: http://i29.tinypic.com/iw56o7.jpg
SM: http://i25.tinypic.com/j0hbg8.jpg
Also:
Notice how in ZM this architecture exists nowhere else, and resembles the Wrecked Ship
ZM: http://i32.tinypic.com/fus55x.jpg
SM: http://i26.tinypic.com/30maj9i.jpg