Released in 2005 (actually says 2005 on the search page of Amazon, but the product page says 1999) is this DVD called In The Beginning. That sounds like volume 1 (and in further research is actually the name of the first episode).
But another DVD, this one released in 2000 called Let The Games Begin (Vol. 1) appears to be volume 1.
Which is the real volume 1 of this anime? And why does the 2005 release ONLY have the first volume in the set (by the boxart I can see no other similar DVDs), but the 2000 release seems to have many other volumes (all with similar box art)? Is one of these a bootleg? Or are they both official? If both are official, then what's the difference in content?