Dungeons & Dustbunnies vs Rifts

Compare Dungeons & Dustbunnies and Rifts side by side. See differences in complexity, dice, genre, cost, and more.

	Dungeons & Dustbunnies	Rifts
Genre	Post-Apocalyptic, Fantasy	Post-Apocalyptic, Scifi, Fantasy, Horror, Superhero
Tags	Rules-Light, Comedy, Gonzo, Beginner-Friendly, One-Shot Friendly, Theater of the Mind, Improvisation, Survival	Character Building, Combat-Heavy, Crunchy, Fear & Stress Mechanics, Gonzo, High-Power, Mana Points, Mecha, Superpowers, Tactical
Core Mechanic	Decrease Dice: each character has one die, starting at d20, that serves as both their health and their resolution roll. To attempt a risky action, roll the die against the Difficulty your class assigns that skill; meeting or beating it succeeds, while a normal failure costs only the attempt. The die steps down a size (d20 → d12 → d10 → d8 → d6 → d4) whenever you roll a 1, take major damage, or voluntarily force the scale to convert a failure into an automatic success. A character whose die would drop below d4 falls Exhausted or dies; sleeping in a safe shelter resets it to d20 and consuming a sugar ration steps it back up one size.	Combat and saving throws use a d20 plus bonuses, with high results overcoming a target number or opposing roll. Skills use d100 and succeed when the result is at or below the character's percentage.
Dice	d4–d20	d20, d100
Complexity	Very Low	Very High
Accessibility	Very High	Medium
Runnability	High	Very High
License	Proprietary	All Rights Reserved
Third-Party Publishing	Not yet researched	Noncommercial only — Palladium Books Internet Policy limited license
Summary only, not legal advice. Check current terms before publishing.
Cost	Free	$$
Publisher	Castamar RPG Studio	Palladium Books Inc.
Year	2026	2005
Languages	English, Spanish	English
Best For	Groups who want a quick, comedic one-shot or short campaign as thumb-sized survivors scavenging a household that has become a hostile wilderness, with a ruleset light enough to read in a few minutes before the first session.	Groups who want long-form science-fantasy campaigns that move from a ruined Earth to other dimensions. The game suits tables whose GM will decide which parts of the broad setting a campaign uses.
Highlights	The Decrease Dice mechanic collapses health and resolution into a single die, so every roll both tests the action and visibly wears the character down as the die shrinks toward d4. Forcing the scale lets a player turn any failure into a guaranteed success by stepping their die down a size, making each clutch moment a deliberate trade of long-term stamina for an immediate result. Monsters are rated by a Threat Die that attacks and spells whittle down, and several (the chitin-armored cockroach, the static-charged dustbunny) shrug off ordinary weapons until players expose a weak spot or switch to fire, water, or magic.	Occupational and racial class packages assign distinct abilities and advancement tracks, giving each archetype a different role in the party. Mega-Damage places many supernatural creatures and war machines on a separate durability scale beyond the reach of ordinary Structural Damage Capacity attacks. Rifts and ley lines make dimensional travel a standing feature of the setting, letting campaigns move between devastated Earth and other worlds.
Considerations	Combat has no initiative or turn order (the GM narrates enemy intent and players react with defensive rolls), so there is little structure for tactical positioning. Rolling a 1 on any skill check (including routine Stealth, Alertness, or social rolls) steps the die down the same as taking a hit in combat, so avoiding unnecessary rolls becomes a survival strategy rather than a purely narrative choice. There is no advancement system: skills are fixed at character creation and the Decrease Die only ever recovers to its starting size, so characters do not grow mechanically over a campaign.	Character creation combines rolled attributes with extensive skill selection, making first-time preparation lengthy. Combat asks each player to track an action economy, active defenses, and which damage scale applies. Magic and psionics use separate point pools and power procedures, adding class-specific rules to the shared system.