The horror game behind Resident Evil

The odd source was Sweet Home, a Japanese horror game released for the Famicom in 1989. It was itself tied to a horror film of the same name. Capcom’s early plan for the project that became Resident Evil was to remake the game, but the project gradually grew into a new story and setting rather than a direct retelling.

What carried over from Sweet Home

Sweet Home already treated survival as more than fighting monsters. Players guided a group of characters through a dangerous mansion, managed scarce supplies, solved environmental puzzles, and faced the possibility that a character could be lost. Those ideas helped shape Resident Evil’s defining tension: every item used or route chosen could matter later.

The mansion also gave the designers a practical way to build suspense. Locked doors, hidden passages, and rooms that had to be revisited turned navigation into part of the danger. A quiet corridor could feel threatening not because something was happening in it, but because the player had to decide whether to risk crossing it with limited resources.

From remake to its own identity

As the game took shape, Capcom developed a distinct cast, plot, and visual style for the PlayStation. The connection to Sweet Home became less a matter of copying its story than carrying forward a design vocabulary: isolated interiors, puzzles, resource pressure, and horror built through exploration.

That lineage helps explain why Resident Evil feels like more than a sequence of monster encounters. Its fear comes from making the player manage a fragile expedition through a place that refuses to feel safe—even after a room has been cleared.