DABaM
Version 2Core Mechanic
When an action calls for a Roll, it resolves on a d20 roll-under. The GM names the two Attributes that best fit the action and adds them for the Limit. If only one Attribute applies, its score is doubled instead. A relevant Background adds its score to the Limit, and situational Modifiers raise or lower it. The roll succeeds when the d20 lands at or under the Limit, and missing by three or less can still succeed at a cost.
Best For
Groups running convention demos, one-shots, or a first session for players new to tabletop RPGs. It also suits GMs who want a genre-neutral base to adapt to any setting.
Highlights
When a check is needed, one d20 roll-under resolves it by summing the two Attributes that best fit the action, so combat, social, and mental tasks share a single path. Backgrounds replace a fixed skill list with freeform descriptors the player defines, each adding its score to the rolls it applies to. The wound track escalates through named statuses from Beaten to Dying, each cutting the Body score used to resist the next injury.
Considerations
Special abilities such as magic or superpowers are left entirely to the GM to design, as the core rules provide no framework for them. Advancement has no automatic progression, leaving the GM to decide when and what each character improves. The GM must pick which two Attributes and which Modifiers apply to every roll, placing resolution difficulty on GM judgment rather than fixed rules.