1. Toys: The original Bakugan franchise started with collectible toys. These were small, spherical creatures that would "pop open" into their battle forms when rolled across specially designed "BakuCores" (playing cards or tiles).
2. Anime: The Bakugan toy line has been accompanied by several anime series:
* Bakugan Battle Brawlers (2007-2008)
* Bakugan: New Vestroia (2009-2011)
* Bakugan: Gundalian Invaders (2011-2012)
* Bakugan: Mechtanium Surge (2012-2013)
* Bakugan: Battle Planet (2018-2019)
* Bakugan: Armoured Alliance (2019-2020)
* Bakugan: Geogan Rising (2020-2021)
* Bakugan: Evolution (2021-present)
3. Video Games: There have been various video games based on the Bakugan franchise, released for platforms like Nintendo DS, PlayStation Portable, and mobile devices.
4. Trading Cards: Bakugan also has a trading card game, where players can collect and trade cards featuring different Bakugan and abilities.
5. Other Media: The franchise has also expanded into other media like comics, books, and online content.
So, "Bakugan" is not just one thing, but a whole universe of toys, anime, games, and more.