It's all static no backend.
The idea came from a game my father and I used to play when walking places in the 1980's. Someone says a word starting with A, the next person tries to continue the conversation with a word starting with B, continue until the end of the alphabet. You can get some funny sentences with it. I've also had games of it with adults in a bar setting so it's not just for children.
Players can be 1, my son likes to see if he can do it without repeating words. Upto 26 for English Latin.
On a privacy note, I've no analytics or any tracing and it should work offline fine.