No. Halo ODST is a special variant of Halo Wars that contains 5 new unit types that will help you beat the game faster. Additionally, ODST is able to play online via Xbox Live with Halo Wars, so you can trounce people online using the new ODST units.
If you mean the Multiplayer disk that came with ODST then yes, but if you mean the ODST campaign disk then no.
no
You do not start off as a rank because there is no online matchmaking for ODST
in HALO 3 you are a Spartan and in HALO 3 ODST you are a Orbital Drop Strike Trooper (ODST)
I am not sure. I don't work for binge but I do know that halo 3 odst takes place in Halo 2 and they were going going to name It halo 4 odst but they named halo 3 odst
Halo 3 ODST will be released on September 22
Yes you can get the mongoose on Halo ODST
Halo 3 ODST is not for PC but Halo 1 and maybe Halo 2-3 are
you need halo 3 ODST to access the halo reach multiplayer beta
I would say Halo 3 ODST
Well Halo 3 has a great but short campaign and online has the default maps. ODST has a short but not to great campaign but comes with a disc that is made for solely Halo 3 online with all the maps. So if you like a better single player experience than get Halo 3 but if you want a better online system then get ODST. My personal opinion is try to get both or if you cant get Halo 3 first then ODST. Note: Don't forget you can also download the map packs but you will need a lot of space on your Harddrive and quite a few Microsoft Points.