you buy it
You cannot make your own maps in Halo: ODST, it doesn't contain forge world. Halo 3, Halo: Reach and Halo 4 all contain forge world.
i own it and halo reach is way shorter (but harder) then halo 3.
No ODST comes as its own disc and if you own odst you get a beta of Halo Reach in 2010
no bungie do
no you dont they are each there own game
if you are saying how do you make your own world in halo reach, use forge mode to make a map.
It is your own opinion
You need to do forge to create your maps in halo 3
everyone in the world has their own oppinion in halo to some people it is cool to others it isn't
Yes but it is against rules, and you may be banned from Halo and even your own xBox.
in halo combat evolved u cant create ur own stuff in halo custom edition u can
I would say if you don't own reach then don't buy it. From what I hear, halo 4 is going to be similar to Halo 3.