Sources were originally provided at https://github.com/librefonts/creepster in .sfd format (FontForge) and the latest version in that format is available at commit f6eec0d741fd8ecba905f403d77c073f2e8be7f6.
On 1 Jul 2026, the sources were converted to .glyphs format using babelfont-rs in a new repo hosted at https://github.com/googlefonts/creepster