Nat12s

Nat12s refers to a specific type of dice roll in tabletop role-playing games, most notably Dungeons & Dragons. A "Nat12" is not a standard term. The term "Nat" is short for "natural," and it signifies rolling a specific number directly on the die without any modifiers added. The most common "Nat" rolls discussed are the Natural 1 and the Natural 20. A Natural 1 is often interpreted as a critical failure, meaning the action taken results in a particularly bad outcome. Conversely, a Natural 20 is typically considered a critical success, leading to an exceptionally good result. If a game uses a 20-sided die (d20) and a player rolls a 12, it is simply a roll of 12, not a critical success or failure. The significance of any given die roll, including a 12, is determined by the game's rules and the specific ability check, attack roll, or saving throw being made. Therefore, a "Nat12" is not a recognized game mechanic and likely a misunderstanding or a custom house rule.