Halo 3: ODST is coming out soon and with a new play style, sandbox gameplay. As a ODST in New Mombassa you'll be able to walk through the city in anyway you want and take many different routes to your goals. Do you think this is just a test Bungie is making to see if it works. Reach is a huge planet covered in forests and everything you'll see on our earth , but with more military bases, underground bunkers, and futurestic stuff. In the book Fall of Reach the spartans ground side seperated and the fate of most are unknown this could be their story . In addition, the spartans at this time either have no shields, a damaged suit of armor from descent to Reach, or have the first set of shielded spartan armor which is much weaker than the ones used in Halo 2 and 3. This new sandbox gameplay is fresh for the Halo franchise and will satisfy everyone so I believe its very possible and will be enjoyable if done. Maybe they might even change the games story depending on what missions you do first and how you do them. What do you think?