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Hidden Worlds Refined Core
Hidden Worlds Refined Core is a table-top roleplaying game set in the near-future urban fantasy World of Incursion. The HW20 system uses a single d20 with fast, deadly combat mechanics, and a completely open magic system that we call Faith.
There are no classes or levels in the HW20 system. Instead, the skills that the characters use during the game session determine how they advance at the end of each game session. In other words, the characters gain a little bit of advancement every game session based on what they do.
The Hidden Worlds Refined Core book has Bryan Donihue’s near-future monster hunting setting, with other settings available, including a sci-fi expansion setting called Fizanthra’s Guide to the Fringe. The modular rules allow for any setting, with human, monster, or even alien characters. High fantasy and Victorian, as well as horror, noir, and even post-apocalyptic settings are all options for the Hidden Worlds Refined Core rules.
The Hidden Worlds Refined Core is a complete system overhaul of the original acclaimed release, Hidden Worlds: Incursion. This new version makes the combat system even smoother, makes the faith mechanics even easier to play, and enhances character creation. Hidden Worlds Refined Core is the definitive core manual for the HW20 Core System, and brought to you by Bryan Donihue, the One-Legged GM.
No Classes. No Levels. No Limits. Welcome to the Hidden Worlds.
Hidden Worlds Refined Core is a table-top roleplaying game set in the near-future urban fantasy World of Incursion. The HW20 system uses a single d20 with fast, deadly combat mechanics, and a completely open magic system that we call Faith.
There are no classes or levels in the HW20 system. Instead, the skills that the characters use during the game session determine how they advance at the end of each game session. In other words, the characters gain a little bit of advancement every game session based on what they do.
The Hidden Worlds Refined Core book has Bryan Donihue’s near-future monster hunting setting, with other settings available, including a sci-fi expansion setting called Fizanthra’s Guide to the Fringe. The modular rules allow for any setting, with human, monster, or even alien characters. High fantasy and Victorian, as well as horror, noir, and even post-apocalyptic settings are all options for the Hidden Worlds Refined Core rules.
The Hidden Worlds Refined Core is a complete system overhaul of the original acclaimed release, Hidden Worlds: Incursion. This new version makes the combat system even smoother, makes the faith mechanics even easier to play, and enhances character creation. Hidden Worlds Refined Core is the definitive core manual for the HW20 Core System, and brought to you by Bryan Donihue, the One-Legged GM.
No Classes. No Levels. No Limits. Welcome to the Hidden Worlds.

