This is RPG Maker en español website. It features a custom PHP engine for fast and efficent (but a bit uncommon) page rendering.
https://build.rpgmaker.es (DEV demo version)
https://build.rpgmaker.es/template (For template demo).
You can go to docs folder for seeing more information about the engine, using it, how to install it and other sort of interesting stuff.
Current discussion of the site is held in Matrix.org or Discord . It doesn't matter what you will choose, those channels are bridged :D
See License for details.