Jack-o-Nine-Tails is the viral adult dark fantasy slave trainer sim set in Eternal Rome, the fog-shrouded crossroads of all universes where the Slaver’s Guild runs a booming human trafficking ring. Step into the role of the legendary Jack-o-Nine-Tails to acquire unique girls, reshape their personalities, and choose whether to sell them for profit or keep as personal trophies.
Eternal Rome: The City of Fortunes and Calamities
1. Set in the fog-shrouded crossroads of all universes, Eternal Rome is a city of fortunes and calamities, where gleaming opulent districts sit blocks away from crushing poverty-stricken slums, and the value of human life is calculated to the last copper spark by the all-powerful Slaver's Guild that controls the city’s most profitable underground enterprise.
2. The city’s winding cobblestone streets, gilded noble estates, seedy underbelly slave markets, and hidden guild training facilities are all fully explorable, with random NPC encounters, hidden side quests, and dynamic world events that shift based on your reputation with the Slaver's Guild, rival trainers, and the city’s corrupt ruling factions.
3. Dynamic weather and day/night cycles alter NPC behavior and available opportunities: rain-soaked alleyways host secret, unregulated slave auctions after dark, while broad daylight brings city patrols that can foil illegal training operations if you don’t take care to hide your activities from prying eyes.
Deep Character Acquisition & Custom Training Mechanics
1. Build a roster of unique captive girls pulled from across every universe, each with distinct backstories, wildly different personalities, physical features, and hidden preferences that range from fiery defiance to quiet submission, with unique resistance thresholds and secret traits that unlock as you build a rapport (or deliberately break their spirit) over time.
2. Design custom training regimens tailored to each girl’s unique needs: choose between strict punitive discipline, reward-based positive reinforcement, or unorthodox methods to bend them to your will and remake them exactly as you see fit, unlocking new intimate interactions, skill sets, and unique dialogue options as their loyalty to you grows.
3. Track each girl’s full progress via the guild’s custom profiling interface, which logs their obedience levels, learned skills, physical changes, and personal affections, letting you fine-tune your training approach over time to get the exact results you want before deciding their ultimate fate.
Sovereign Choice, Profit Systems & High Replay Value
1. Once training is complete, you are their sovereign master, holding full power over each girl’s future: sell her at the city’s high-stakes auction house for shining sparks, the universal currency of Eternal Rome, to pad your guild rank and unlock more expensive, rare captive acquisition opportunities, or keep her as a personal trophy to build your private collection of trained captives.
2. Every choice you make impacts your standing with the city’s warring factions: siding with the Slaver's Guild’s corrupt leadership unlocks exclusive training resources and high-value captive stock, while crossing rival trainers or corrupt city guards can trigger ambushes, auction bans, and even full-on guild wars that cut off your access to key city areas and rare characters.
3. Multiple branching story paths, 15+ distinct story endings, and a New Game Plus mode that carries over your earned sparks, unlocked training perks, and faction reputation status ensure no two playthroughs of Jack-o-Nine-Tails are ever the same, with hundreds of hours of repeatable content for dedicated players to uncover.




