The Great Downtime was a period from April 26th, 2011 to October 13th, 2011 in which the BZPower forums went offline for a six month period. This led to the entirety of the First Age being unaccessible for posting, as the old forums were turned into a read-only archive. Bionicle Mafia 35: Chaos, in-progress at the time the forums went down, was as a result never completed.
Every single game in the First Age; a list is rather unnecessary. However, every game was still viewable until the Archival Deletion.