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Into the Odd hero art
Chris McDowell / Free League

Into the Odd

"Survive an industrial nightmare where gold is the only law."

Diced20 + d6
Players2–5
Prep~10 min
Foundry VTTCommunity
Complexity
What is this system

An ultra-minimalist OSR game (Old School Renaissance — a style inspired by early editions of D&D), the progenitor of an entire genre. Rules — 48 pages. Character creation — 2 minutes. Three stats (Strength, Dexterity, Willpower), a handful of HP, and a strange item in your pocket. That's it. You're ready to die in the tunnels beneath Bastion — a vast industrial megalopolis full of secrets, sewers, and living labyrinths.

Setting

Bastion — a surreal city-state resembling Victorian London crossed with nightmares. Beneath it lies the Underground Sea, teeming with Arcana (strange artifacts with unpredictable properties). Beyond the city — the Iron Wasteland and the Golden Land. The world doesn't explain itself. It simply exists and waits for you to explore it.

What it looks like at the table
You descend into the sewers beneath Bastion. Ahead — a hum. Your Arcanum, a glass eye, starts vibrating. The scout says: 'Go back.' But you've already spotted the gold. The creature strikes — 1d8 damage. 4 — your 3 HP are gone, the remaining 1 damage goes to Strength. Save (a dice roll to avoid disaster) against Strength... failed. Scar: your left hand now glows in the dark.
Playstyle
Exploration Survival Sandbox Fantasy Weird
Key mechanics

No attack rolls

Attacks always hit. The die only determines damage. Combats are incredibly fast — decisions matter more than dice.

Arcana

No magic. Instead, strange artifacts — each unique, unpredictable, and capable of killing its owner faster than enemies.

HP = Hit Protection

When HP hits zero, damage goes to Strength. Surviving at 0 Strength earns a Scar — a permanent change to the character.

Minimalism

No classes, no levels, no skills. A character is defined by what they carry and what they've survived.

What people say
Into the Odd is the game that made me realize I don't need 300 pages of rules to have the best session of my life. We played for 4 hours and I prepped for 10 minutes.— u/bastioneer_23, r/osr
The "attacks always hit" rule sounds weird until you play it. Then you realize combat becomes about positioning, retreating, and creative problem solving instead of "I roll to hit... miss. Next."— u/dungeon_owl, r/rpg
Art & materials
Free resources

Written and curated by Kejid — TTRPG player & GM

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