PlayroomKit alternative

What PlayroomKit is

PlayroomKit (Playroom) is a hosted multiplayer SDK aimed at web games, with ready-made lobby UI, player state helpers and features for party and Discord Activity-style games.

Side by side

Checked September 2026 against public documentation. Tell us if something changed: contact@lannetech.ae.

Choose PlayroomKit if…

• You want a drop-in lobby UI and party-game features out of the box.
• You build Discord Activities and want their specific helpers.

Choose Multiplayer API if…

• You need server-validated state with declared rules (rates, ranges, monotonic scores, server-only fields) and peer attestation for results.
• You want persistent accounts, inventory and leaderboards in the same API.
• You want WebRTC peer-to-peer to keep realtime traffic off servers.

Moving from PlayroomKit: what maps to what

• Player state → room.mine(key, value) writes under players.<me>; read others with room.state.get or watch.
• Global state → shared state paths such as world.*, guarded by rules (write: "host", rate, min/max).
• Room codes → mp.create() returns a six-character room.code; friends call mp.join(code).
• Lobby UI → yours to design; the API gives you members, host and phase (lobby, playing, ended).

The concepts are covered in full in the documentation and in llms-full.txt, which a coding agent can use to do the port for you.

Try it in one call

curl -X POST https://multiplayerapi.com/v1/games \
  -H 'Content-Type: application/json' \
  -d '{"name":"My Game","preset":"realtime_arena"}'

Returns a public key, a secret key and a sandbox with 2 live rooms for 24 hours. No account, no card.