Sinful Testament
A dark historical otome visual novel. Houston, Texas, 1925. A heroine from 2025 is reborn as the daughter of a murdered mafia boss and becomes “compensation” for the Devil’s Six gang. Six dangerous men, seven deadly sins, and a choice between Redemption and Fall.
Last Updated: 6/17/2026
| Developer | Haven of Souls |
| Publisher | Haven of Souls |
| Steam App Id | 4314300 |
Sinful Testament
A dark historical otome visual novel. Houston, Texas, 1925. A heroine from 2025 is reborn as the daughter of a murdered mafia boss and becomes “compensation” for the Devil’s Six gang. Six dangerous men, seven deadly sins, and a choice between Redemption and Fall.
Last Updated: 6/17/2026
- Windows
- Mac
- Linux
About Sinful Testament
Sinful Testament is an Indie, Adventure, and Simulation game developed by Haven of Souls. It was released on the Steam Store by Haven of Souls.
It can be played and ran on Windows systems. At the moment, there is no confirmed information regarding Steam Deck support for this game.
According to Steam’s category system, Sinful Testament supports the following features:
- Single-player
- Full controller support
- Family Sharing
Media & Sceenshots
Watch the featured video for Sinful Testament and see the latest screenshots from the Steam Store.
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Soures & References
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Sinful Testament data has been sourced from:
- Valve Corporation. (2026, June 17). Sinful Testament on Steam. Steam Store.
- Valve Corporation. (2026, June 17). Sinful Testament. Steam Community Hub.