No they are not a trading card game. They are a sketch card set. A new company 'Viceroy Cards' have created Cryptids as there debut sketch card set (a set which they did an unbelievable job on, better than a lot of other existing companies would do in my opinion). They also put in autograph inserts of cryptozoologists and stamp relic cards as bonuses.
The set was limited to 500 packs and so limited to 500 sketch cards, 500 autographs and 500 stamp relic cards. Unfortunately it is sold out. Sold out pretty quickly after it's release when everyone saw the quality of the set. I doubt people bought packs and intend to resell them so if your interested in them your best bet is to buy the sketch cards from members who have opened packs or off ebay.
Hope I helped