Browser-based horror games have a different rhythm from traditional desktop horror. The player arrives through a tab, often with other tabs open nearby, and the experience has to earn attention quickly without relying on scale. For a visual novel, that constraint can actually be useful. The format already depends on reading, pacing, controlled imagery, and a careful relationship between what the player knows and what the story withholds. A psychological horror visual novel does not need a large simulation to feel memorable. It needs tone, readable interaction, and enough restraint to let the player sit with uncertainty. The browser can support that if the design treats atmosphere as part of the product architecture rather than a layer of decoration added at the end. Start With a Clear Emotional Contract Before thinking about routes, menus, saves, or launch platforms, it helps to decide what the first minute should feel like. Should the player feel curious, watched, trapped, amused, or uneasy?…