Yeah, it's hard to keep track after they quickly abandoned the numbered naming scheme after 2. And I think that was partly because people were confused anyways by the un-numbered prequel featuring the same setting and cast of characters, while the numbered sequel was almost entirely separate.

(Caveat: I have not played Double Exposure yet so I am not sure how directly connected it is to the first game) The titles are disconnected enough that anyone can basically just jump into the series with any title at any time, the only exception being the first game and Before the Storm, since they're directly connected. I've heard it said that those two can still be appreciated in either release order or chronological order, but would probably be best served played one right after the other either way.

The only other connections I know of are:

• Life is Strange 2 - A character from the original game and Before the Storm plays a minor role in the story, but context is not required to understand the plot.

• Life is Strange: True Colors - A character from Before the Storm features prominently in the story, but context is also not required to understand the main plot. However, this character has a DLC story that I haven't played, so I don't know if that ties in more to Before the Storm than True Colors alone does.