The entire series. All 9 season complete. Each boxed set has 6 or 7 DVDs. Six of these are the special Collector's edition deluxe boxed sets that came with an extra DVD of bonus features, behind the scenes information, promotional TV spots, a DVD -Rom game and Chris Carter's analysis of the season. Those six are also in fancier, larger (thicker) boxes that open up and display photos, etc. These are for seasons 1, 2, 3, 4, 5 and 7. The deluxe boxes were the original issue and the smaller ones with the DVDs only were issued later. The Collectors boxes sold for about $30 more each then the second issue. Four of the years are still sealed. The rest are open but only a few of the DVDs were ever watched so all are in mint condition.