CTN v1.1 is an alpha file of the Minecraft map Castle To None: PURIST EDITION 2023, made for Minecraft 1.14.4. It was published on July 22, 2020 and is 39.9 MB in size. Pre-release builds can contain bugs — back up your world before installing. For the full description, screenshots and every other version, visit the Castle To None: PURIST EDITION 2023 map page.
How to install: Extract the .zip and move the world folder into .minecraft/saves; the map then appears in your Singleplayer list.