Breathless

Breathless is a rules-lite survival horror RPG using polyhedral dice with degradation mechanics. Classless and low-prep, it emphasizes scavenging, item deterioration, and the exhausting toll of survival in a zombie-filled walled city. Ideal for one-shots and groups seeking tense, cinematic horror sessions.

At-a-glance

Survival Horror • Polyhedral dice (d4-d12) with degradation • 2-5 + GM • Low prep • Rules-lite • 2-4h sessions

Genres:
Decision Tags:
Low Prep
Breathless

The city has been sealed off from the outside world, trapping survivors inside with hordes of "Crawlers"—zombies driven by insatiable hunger. You are surrounded by strangers in a crumbling urban landscape where ammunition dwindles, weapons break, and every breath could be your last.

Theme and Setting

The setting draws from zombie media like Shaun of the Dead , Left 4 Dead , and The Last of Us , emphasizing desperate survival over heroic action. There is no rescue coming, no cure on the horizon—only the relentless pressure to survive another day.

How Play Feels

Breathless centers on a dice degradation system: skills and items are assigned die ratings from d4 to d12. When you use a skill or item, you roll that die hoping for a 4+ to succeed—then the die degrades to the next step down (d12 → d10 → d8 → d6 → d4 → exhausted).

What Makes It Distinct

This creates an economy of diminishing returns where your best tools and abilities wear out exactly when you need them most. The "Catch Your Breath" mechanic allows recovery during quiet moments, but at a cost—accepting a narrative complication in exchange for restoring dice.

Where It May Not Fit

You want combat and action to drive most of the session You want low-tension or low-threat play.

Decision guide

What this game is about

Key facts
Players
2-5 players + GM
Session
120-240 minutes
Prep
Low
Play profile
Complexity
3/5
New GM Fit
5/5
Roleplay Focus
4/5
Combat Focus
2/5
Tactical Depth
2/5
Campaign Depth
3/5
Who it suits
Best for
Groups that want tension, danger, and unease to stay active at the tableTables that want quick onboarding and low mechanical dragPlayers who want character, atmosphere, or story to matter more than pure tactics
Avoid if
You want combat and action to drive most of the sessionYou want low-tension or low-threat playYou want the system to stay almost invisible at the table

A strong fit for groups that want tension, danger, and unease to stay active at the table, with rules Lite helping define the experience.

Agent data

Structured data and an explicit decision profile JSON document are available for remote agents.

Open agent JSON