The next Halo game after Halo: Reach will be Halo 1: Combat Evolved, Halo 2, Halo 3, Halo ODST and Halo 4
*I think this is what you are asking, but your question is not very clear. This is not the order the games came out, it is the order of the story line. If this is not what you were asking for please leave a comment on my message board and I will edit this answer.*
The order that the games go in time is this:
Halo: Reach
Halo: Combat Evolved
Halo 2
Halo 3
Halo 3 ODST (Same time as 3)
Halo Wars (I think around the same time as 3)
Halo 4.
The order that the games go be release is this:
Halo: Combat Evolved
Halo 2
Halo 3
Halo Wars
Halo 3 ODST
Halo: Reach
Halo: Combat Evolved Anniversary Edition
Halo 4
halo reach comes out in September 14
The come out after the year halo reach comes out
halo reach come before halo combat evolved
In the Halo Universe, Halo CE. In reality, Halo 4.
Halo Reach comes out on September 1st 2010 The multiplayer beta for Halo reach comes out on May 3rd 2010
an invitation to the halo reach beta
halo reach comes out on the 14th September 2010 --------------------------------------------------------------------------------------------------------------
it will last until halo reach the game comes out from September to December
No Halo 4 will not be coming out with a new story line but their is Halo ODST and Halo Reach and If you Buy Halo ODST you will be able to try halo Reach which comes out in 2010.
Its cool but Halo reach is better and when Halo 4 comes i cant imagine how it will be:)
Forge is not in Halo 2 and comes out in Halo 3 and Reach
Halo: Reach comes with a built-in map editor called Forge Mode. You can access this from the main menu of Reach.