Succubus Station（R18）

Succubus Station is Shimomura Tsutomu's first complete game, and it wears its influences openly: a mashup of Civilization 6's empire-building systems and Catan's resource trading, wrapped in a space-opera premise where you lead the Succubi—a demon race rebuilding after 300 years of interstellar exile.

You play as the Matriarch tasked with establishing an orbital station above your colonized homeworld. The core loop involves balancing resources, managing diplomatic relationships with rival powers and the pirate republic that controls local space, and making strategic choices that ripple across the game's branching narrative. It's a management sim where spreadsheet optimization meets story consequences; your trading and alliance decisions carry weight beyond pure numbers. The game promises multiple endings contingent on your path through its geopolitical web.

The adult content is woven into the setting rather than gratuitous—intimate scenes and explicit material exist within the context of a civilization that has historically relied on the sex industry for survival, and they surface during certain diplomatic or character interactions. Shimomura frames this as thematic rather than gratuitous, though players seeking explicit content will find it present. The tone is earnest about the Succubi's history and agency.

Technically, Succubus Station runs on HTML5 and Windows via a browser or standalone build. Shimomura has labeled it V0.99, acknowledging that balance tuning, bug fixes, and audio polish remain ongoing. The developer notes the game shares lore with their two previous titles, so returning fans may catch familiar worldbuilding. Completion length isn't specified, but management sims of this scope typically demand 15–25 hours depending on playstyle.