What exactly IS fiasco? Is it some sort of rp game, or is it like DND?
It's a GM-less co-op storytelling tabletop RPG meant to be played with no prior planning with around 3-5 friends, and it usually lasts about one or two sessions. Basically, we all make OCs for the game on the fly using dice and whatever playbook (we were using a modern fantasy/magical girl one) and play out a story with them.
The playbook offers suggestions for stuff like your relationship to another character, or what their goal might be, etc. and you sort of build on those suggestions. For example, Charlie and Tikki had something like "they share the same uncommon hobby" and it was up to us to work out what that hobby was.
Then, once characters are set up, you basically go around the table clockwise setting and resolving scenes between your character and the next, though other players can participate in those scenes too if needed! Remember, it's a collaborative story you're building, so the whole point of the game is telling a good story on the fly with your pals.
There's more to how it plays out, according to dice color and stuff but we play kind of a modified version so I'm not so knowledgeable about how that bit works, but yee if this sounds interesting deffo check it out, it's pretty fun!