Heaven Will Be Mine is a queer science fiction mecha visual novel from the creators of queer cult horror visual novel We Know The Devil, about joyriding mecha, kissing your enemies, and fighting gravity’s pull. Follow three women piloting giant robots in the last days of an alternate 1980s space program fighting for humanity’s future—or ditching their jobs to make out with each other instead.

The story is set in an alternate history post-Cold War universe wherein humanity has split into three warring factions, known as the Memorial Foundation, Cradle's Graces, and the Celestial Mechanics. Over the course of the game the player, through combat interactions with the other two faction pilots, can gradually push one of these three factions toward dominance over space and humanity's future.