On December 5, 2017 (and in the days surrounding it), the community was buzzing with the discovery of new images on the official Boomlings website. RobTop posted several teaser files, including "thing4," "thing5," and "thing6".
These teasers revealed new community-created icons that were being added to the game. Geometry Dash Update 05.12.2017
One image showcased three colored keys and "demon eyes," which players quickly realized were linked to the Basement —a secret area in the game’s Vault system where players interact with the Keymaster. Impact on the Mobile Community On December 5, 2017 (and in the days