For almost all of the languages we have available in the shop, there is one word list and one trainer.
So There Aren't Different Levels?
No, at this moment in time we do not offer different levels of the same language.
But What About the "English -> Language" and "Language -> English" Option? Do I Need Both?
This relates to whether the materials are for English speakers wanting to learn another language or other language speakers wanting to learn English. You only need one version. You can learn more about the different versions in this post.
But What About Bundle #3?
Bundle #3 includes four trainers, two word lists, and the Kickstarter Goodies. It is intended for those individuals who want to learn more than one language and prefer to get all the materials now.