I’ve been interested in adding support for Defold to Nakama server for some time. It includes lots and lots of gameplay features for all kinds of different live games and you can extend the server with custom code written in Lua. I’m biased (as one of the lead developers on the server) but believe it’s a great fit for a Defold game developer.
The latest release of the game server on Monday next week adds compatibility changes to our client/server protocol (JSON support) as well as the current protobuf3 API. This should give me all I need to build a client for Defold 
. I’ll try to keep some development notes here as I progress.