I never even know about Kre-o until last week. Previously, the only small mini Transformers I knew about were the Tiny Titans and Transformers Tiny Turbo Changers lines and I have dozens of each series there. My son picked up a bag at Walgreens randomly and I found out that it was Transformers. I bought one bag and instantly fell in love. Next day started to stop by every Walgreens and Dollar General in my area. I have so much catching up to do and still have 4 collection lines left. I am looking forward to picking up collection 3 hopefully soon. Right now I have all of collection 2 and am missing Iceburg from collection 4, which sucks because I bought 28 bags of collection 4 (goal was to get two of each figure in the collection) and still didn't get one of each of the 12 figures.