- Home: https://code.google.com/archive/p/l-echo
- Inspiration: Echochrome
- State: beta, inactive since 2016
- Download: https://storage.googleapis.com/google-code-archive-source/v2/code.google.com/l-echo/source-archive.zip
- Keyword: puzzle, remake
- Code language: C++
- Code license: GPL-3.0