Flying Frogs exclusive packs

[Rullys]

I also have a question regarding expansion supplements. Can all of them, in any order, be integrated into the original Last Night on Earth, or must you own certain expansions first? Can someone clarify? I don't own any expansions yet as they're pretty expensive, but these supplements look like a good start. I'm just concerned I won't be able to use them without having other expansions first.