No. The Flood is controlled by an AI (Artificial Intellgence). However, you can play as the Covenant in Skirmish.
No.
no the were only on halo rings
No.
You can't.
No, there is no flood in Reach. With the expception of halo wars the flood was not released until halo combat evolved where the humans stumbled across their existence in search of a lost platoons distress beacon.
Halo 3: ODST and Halo Reach
No. You can never play as the flood.
a mod
It is impossible to play as a hunter in Halo Reach...
Halo : Fall of Reach Halo : The Flood Halo : First Strike Halo : Harvest Halo : Ghosts of Onyx
you cant
No, I play halo reach on my 4gb xbox.