Here is how I understand things, others may have a different viewpoint or may be able to break certain eras down even further.
First Era**: Japan Only (1996-1998)**
Iâll start with the Japanese-only era. This era included non-TCG cards like Topsun and Bandai Carddass, as well as exclusive Japanese TCG sets like the Vending Series. It also includes the original Japanese TCG sets that were later printed in other languages - Base, Jungle, and Fossil, and Rocket. This was also the time when the most valuable trophy cards in the hobby were printed, like the Illustrator, original Pikachu Trophies, and Family Event Kangaskhan. For the rest of the discussion I will focus on the English cards.
Second Era:English Origins (beginning of the larger âWOTC eraâ; 1999)
This era starts at the very beginning of 1999 and runs through the end of the year, with the original print run of the English Base Set by Wizards of the Coast. This era comprises the original Pokemon phenomenon, a time when Pokemon was at its peak of cultural domination. The cards include English Base Set, Jungle, Fossil, and some Black Star promos, which contain the rookie cards for the original 151 Pokemon.
Third Era: The End of Generation 1 (2000)
This era includes English Team Rocket, Gym Heroes, Gym Challenge, and some more Black Star promos (although Team Rocket could arguably be put in the second era since this was around the time that the initial wave of Pokemon hype began to cool down). They were the last cards to be printed prior to the release of Generation 2.
**Fourth Era: Neo Era (2000 - 2002)**This era includes the introduction of generation 2. It includes Neo Genesis, Neo Discovery, Neo Revelations, Neo Destiny, and some more Black Star promos.
**Fifth Era: e-Reader Era (2002-2003)**This era includes Expedition, Aquapolis, Skyridge, and the last Black Star promos. It can also arguably include the Japanese exclusive Web and VS series cards. This is the final stage of the the larger âWOTC eraâ for English cards. It is also the final set prior to the introduction of Generation 3. This transition from this era to the next one is a defining transition in the hobby.
I know far less about cards post-WOTC than many other people here, so perhaps others would be able to break this down even more like I did with the larger âWOTC era.â
**Sixth Era: EX Era (2003-2007)**This era includes the first English cards to be produced by Nintendo rather than Wizards of the Coast. It is also the era that introduced Generation 3 and of course is the era that contains the highly sought-after âEXâ cards. It includes English sets #17-31.
Seventh Era: **Generation 4 (2007-2011)**Includes English sets #32-47.
Eight Era: Generation 5 (2011-2014)
Includes English sets #48-58.
Ninth Era: Generation 6 (2014-2017)
Includes English sets #59-71.
Tenth Era: Generation 7 (2017-2019)
Includes English sets #72-86.
Eleventh Era: Generation 8 (2020-present)
Includes English sets #87-88 (so far).