Developed by Keep Away From Fire, Boreal Alyph was based on the Marc Laidlaw short story--Epistle 3--Boreal Alyph aimed to capture Valve’s lost vision, and bring a fun, and satisfying end to the celebrated Half-Life series. Epistle 3 is a synopsis of Half-Life 2: Episode 3, written by ex-Valve writer, Marc Laidlaw. The project is no longer in development as of 2021.