Does anyone know if there are any plans to create a Houdini Engine plug-in for Modo, official or otherwise?
The only other discussions on the subject I've found are fairly ancient, and I had honestly expected something to have been done by this point.

sadly i haven't heard or read any news on this topic. whats clear is that for 3DS Max there will be a plugin but the question is when it will be released.

the open position on 3DS Max: https://www.sidefx.com/careers/software-developer-games-3ds-max-plugin/ [www.sidefx.com]

there was a simple plugin some time ago from ttvd but it has been taken down from github.
https://github.com/ttvd/HoudiniEngineForModo [github.com]

i don't think that SESI will make a plugin for Modo because to spend the resources for game engine market makes much more sense for them. i hope somebody from the community will do something.