Heaven Will Be Mine is a queer science fiction visual novel that immerses players in a unique narrative experience combining mecha action and romantic elements. Set in the alternate 1980s, the game follows the stories of three women piloting giant robots as they navigate the challenges of a failing space program. Players can choose to engage in intense battles for humanity's future or explore romantic encounters among the pilots, adding depth to the gameplay.

The game features a rich, narrative-driven experience with multiple story paths, allowing players to make choices that influence the outcome. The visual style is distinct, complementing the themes of love and conflict, while the soundtrack enhances the overall atmosphere. Heaven Will Be Mine stands out in the role-playing game category, offering a blend of sci-fi, romance, and engaging storytelling.