D100 Space

D100 Space is a thrilling solo tabletop RPG set in a vast, uncharted galaxy teeming with alien civilizations, cosmic dangers, and ancient technologies waiting to be discovered. Utilizing a straightforward percentile system, it empowers players to shape the universe through exploration, diplomacy, and conflict, while also encouraging improvisation and storytelling at the table. What sets D100 Space apart is its seamless blend of old-school mechanics and modern narrative sensibilities, allowing players to craft epic space odysseys filled with unexpected twists and rich lore.

At-a-glance

Science Fiction • 1-1 players • 5/5 complexity • Low prep

D100 Space

D100 Space is a solo-focused tabletop roleplaying game set in a vast, explorable galaxy. It uses a d100 system similar to D100 Dungeon, emphasizing resource management, tactical decision-making, and exploration.

Theme and Setting

While designed for solo play, its core mechanics and setting elements can be adapted for group play. The game's design evokes a sense of old-school, random event-driven gameplay, which may appeal to some while deterring others seeking a more streamlined experience.

How Play Feels

The game focuses on captain managing dangerous operations, trade, mining and space battles. Theme and Setting D100 Space casts players as captains of starships navigating a galaxy ripe with opportunity and danger.

What Makes It Distinct

The setting emphasizes exploration, trading, and combat encounters across numerous star systems. Players manage resources, complete operations, and engage in space battles to gain wealth and notoriety.

Where It May Not Fit

You want a very light rules load You dislike tactical combat or heavier encounter procedure.

Decision guide

What this game is about

Key facts
Players
1-1 players
Session
1800 minutes
Prep
Low
Play profile
Complexity
5/5
New GM Fit
1/5
Roleplay Focus
3/5
Combat Focus
3/5
Tactical Depth
5/5
Campaign Depth
5/5
Who it suits
Best for
Players who want science-fiction ideas to shape the actual play experienceGroups that want place, travel, and discovery to stay centralLong-form campaigns with room for the table to build momentum
Avoid if
You want a very light rules loadYou dislike tactical combat or heavier encounter procedureYou mainly want short standalone sessions with minimal carryover

A strong fit for groups that want science-fiction ideas to shape the actual play experience, with exploration-Driven helping define the experience.

Agent data

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

Open agent JSON