Frequently Asked Forum Questions | ||||
Search Older Posts on This Forum: Posts on Current Forum | Archived Posts | ||||
IIRC, the Flood in Delta Halo managed to break out a long time ago, but were playing cat and mouse with the Sentinels. Then the Covenant found it, perhaps with the Sigma Octanus info, and fudged it all up by dying to the Flood, much like in Alpha Halo. Since we didn't have the Chief there to blow up the Installation, it eventually grew into a Gravemind.