For those not familiar with Minetest, it's basically the #1 Minecraft "clone" on the internet (as far as I'm aware it counts as such). It's written in C++ and the Irrlicht engine rather than in Java, and best of all it's open-source and GPL licensed with assets under various CC licenses. Unlike Minecraft it's designed for extensive modding, and both mods as well as custom games can be built using Lua scripting, a language and API that's very simple to learn even for those with minimal programming knowledge. The player model is also compatible with Minecraft skins, at least early versions before cloth support was added (hair however works). It already has a very large community, and is perhaps one of the most popular FOSS games on the internet to this day... an user base is therefore not something we'd be lacking either, granted people are fine with the whole vore aspect.
Minetest.net - Minetest Git - Modding API
If anyone was to make a vore mod and server for Minetest, I would gladly join in on a regular basis! There's already a mod for it which clones Minecraft almost entirely (not part of vanilla Minetest of course), and I believe there's still a My Little Pony mod which has a server somewhere too... certainly Vorecraft can be considered, or in this case Voretest
Like I said I'm already too busy with other projects. If need be however, I can at least provide help with Lua and the modding API here.
