A board everyone sees.
Move a sticky note here — watch it move on your phone at the same instant.
Board is empty — add a note.
A board everyone sees.
Why this matters
What you just saw
This board is two platform calls: publish a change, subscribe to a channel. Move a sticky note on your laptop and it moves on your phone — and everyone else’s — at the same instant.
How it works
Realtime pub/sub broadcasts each change the moment it happens, and KV stores the board state so anyone joining later loads the current picture instantly. No websocket servers, no reconnection logic in your code.
The bigger picture
Anything becomes multiplayer with the same two calls: live dashboards and ops rooms, kanban and planning boards, collaborative editors, shared shopping carts, auctions and live bidding, classroom quizzes, game lobbies, IoT status walls. It’s what makes a product feel alive instead of needing a refresh.
Why Maravilla
Doing this yourself means standing up websocket infrastructure, presence tracking and reconnection logic. Maravilla ships realtime as a built-in primitive — you just publish and subscribe from the same runtime that serves your app.