This page has a list of features and improvements for both Colyseus (Multiplayer Framework) and Colyseus Cloud (paid managed infrastructure/hosting)

• Timeline is open. This list is not exhaustive.
• The order of items may not reflect their priority or importance
• Feel free to discuss any of these items on Discord or GitHub Discussions

• database (paused until 2025) + user auth system (introduced in 0.15.15, see docs).
• Improvements on the state synchronization structures (@colyseus/schema):
  • introduce a “data ownership” model; deprecate filters
  • improve/fix synching arrays (#641)
  • research/experiment how to improve encoding speed (try to use a similar approach as msgpackr)
  • research/experiment better memory usage - similar to how entity-component systems handle memory
  • fix callbacks when reusing instances (colyseus/schema#151)
• add request/response methods to rooms (requested by @dengzhaofun)
• client input validation (onMessage in the server)
• matchmaking: introduce a new “queue” type
  • a queue would keep more clients than needed before starting a match;
  • user specifies logic that combines clients into a new room
  • reserve seats for selected clients and redirect them to the newly created room
• introduce "version check" to allow native SDKs to communicate with newer versions of the server
• support experimental WebTransport transport option
• fork and support a Godot SDK (gsioteam/godot-colyseus)
• wild idea: support RPC calls via schema instances [? elaborate]
• deprecate schema-encoded messages (this feature was added because Unity once lacked typed messages)
• provide a SQL driver as alternative to @colyseus/redis-driver (must support SQLite + PostgreSQL, possibly on top of Kysely)
• allow "full stack" TypeScript types for room messages and room types (like trpc)

• Allow horizontal scalability + load balancer
  • Allow to increase/decrease the number of instances
  • Allow automatic scaling up/down
• No downtime deployments (need 2+ instances per region)
• Allow client SDK to auto-select region based on lowest ping
• Provide mass load-testing orchestration (spawn multiple nodes that run loadtest scripts)
• Support subscribing to add-ons per application:
  • Database (small, medium, large)
  • Object Storage (aka S3)