Have to correct you on two points here 1) people glithed into the PLACEHOLDERS for future levels, their not 100% complete areas yet. 2 and most important) I believe what your inferring to is called a series... its that same way to say that Halo 1 is a small chunk of a huge game in the "halo universe" same with all other series, Gears of War, CoD, Final Fantasy for god sake!.