The Burning Wheel is a fantasy role-playing game independently written and published by Luke Crane. The game uses a dice pool mechanic (using only standard six-sided dice) for resolution, and a system of prior-experience for character generation which tracks the development of the new character from birth up to the point they begin adventuring.
Unlike many other RPGs — but explicitly like earlier games — the Burning Wheel does not include a dedicated setting, beyond the setting implied by the rules and mechanics and the life-paths used in character generation, which implies a fantasy world by default, though it can be easily modified for other settings.
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Now how does this Classic edition differ from the newer Revised one? in the Classic version:
1. You need to count paces in combat to determine range
2. There is no Duel of Wits
3. Classic lacks the Resource mechanic
4. Classic lacks Circles
5. Classic is missing many, many life path updates and emotional rules clarifications found in the Revised edition