Fantasy & Sci-Fi Prompt Templates
AI prompt templates for fantasy and sci-fi. Create magic systems, futuristic tech, and genre elements.
Overview
Fantasy and sci-fi prompts help you create the speculative elements that make these genres work: magic systems, future technologies, alien cultures, and alternate histories. Good genre fiction builds impossible things with internal logic that makes them feel real. These templates help you design systems that create story opportunities rather than plot holes. Use them when you're building worlds, developing supernatural rules, or trying to make the fantastical feel grounded.
Best Practices
Limitations are more interesting than powers. What magic can't do matters more than what it can. Constraints create drama.
Technology and magic should change society. If you introduce teleportation, what happens to cities? If everyone can read minds, what happens to privacy?
Ground the extraordinary in the ordinary. Show how normal people live with your speculative elements. That's what makes worlds feel real.
Internal consistency trumps scientific accuracy. Readers will accept impossible physics if you follow your own rules.
Steal from reality and twist it. Real history, science, and mythology provide richer raw material than pure invention.
Prompt Templates
1. Magic System Architect
Design a magic system where [CORE CONCEPT]. Define: 1) The source of magical power (where it comes from), 2) Hard limits (what it absolutely cannot do), 3) Costs (what users must pay, sacrifice, or risk), 4) How it's learned or accessed (not everyone can use it, or can they?), 5) Social implications (how does this magic shape politics, economy, warfare?), 6) Three common uses and three rare but powerful applications, 7) What happens when magic goes wrong.
Core concept: Magic is powered by dreams. You can only use magic if you slept the night before, and the spell's power depends on dream quality.
SOURCE: The collective unconscious generates magical potential that accumulates during REM sleep. Deeper, more vivid dreams produce more power. Dreamless sleep produces nothing. HARD LIMITS: Cannot affect the sleeping or the dead (they're in dream-adjacent states). Cannot create permanent changes without permanent dream-loss...
When you need a rigorous magic system that creates story opportunities
- •The costs and limitations generate most of your plot conflicts. Make them interesting.
- •Consider what crime, warfare, and daily life look like with this magic. If nothing changes, your magic is just decoration.
2. Future Technology Designer
Design a technology for a [TIME PERIOD/SETTING] sci-fi story: [BASIC TECH CONCEPT]. Explore: 1) How it works (plausible enough for readers to accept), 2) What social problems it solves, 3) What new problems it creates, 4) Who has access and who doesn't (and why), 5) How people resist, abuse, or work around it, 6) Unintended consequences the inventors didn't anticipate, 7) How it changes language, relationships, or daily rituals.
Time period: 50 years from now. Tech concept: Emotion recording and playback. You can record how you feel and let others experience it exactly.
HOW IT WORKS: Neurochemical patterns are captured via non-invasive headband, encoded, and can be 'played' by others wearing similar hardware. Duration limited to 2-3 minutes to prevent psychological overload. PROBLEMS SOLVED: Therapy patients can show therapists exactly what depression feels like. Witnesses can transmit trauma to juries...
When you're building a sci-fi world around a central technological concept
- •The social consequences are more important than the technical explanation
- •Look at how current technology is unevenly distributed. New tech won't suddenly be fair.
3. Creature/Species Creator
Create a [CREATURE TYPE: alien/fantasy race/monster/animal] for a [GENRE] story. Design: 1) Physical description with evolutionary or magical reasoning for features, 2) How they perceive the world differently than humans, 3) Social structure and values (what do they care about?), 4) Relationship to humans (or the dominant species in your world), 5) A misconception that humans have about them, 6) Internal conflict or tension within their culture, 7) One detail that makes them feel real and specific.
Creature type: Alien species for a first-contact story. Genre: Hard sci-fi with optimistic tone.
PHYSICAL: Bilateral symmetry like Earth life, but with three limb pairs. Evolved on high-gravity world, so squat and powerful. Skin changes color based on emotional state, which they cannot fully control. They find this embarrassing. PERCEPTION: Echolocation primary, sight secondary. They 'see' in sonic snapshots...
When you need non-human characters that feel truly alien rather than humans in costume
- •The specific embarrassing or vulnerable detail humanizes non-human characters
- •Different senses and values should create genuine misunderstandings with humans, not just cosmetic differences
4. Alternate History Branching
Create an alternate history where [POINT OF DIVERGENCE]. Trace the consequences: 1) Immediate effects (first 10 years after divergence), 2) Medium-term effects (50 years out), 3) Present day in this timeline (if story is set now), 4) What's surprisingly similar to our world despite the change, 5) What's most significantly different, 6) A character whose life would be completely different in this timeline, 7) How this history would be taught in schools.
Point of divergence: The printing press was never invented in Europe. Information spreads only through handwritten manuscripts and oral tradition.
IMMEDIATE (1450-1460): Luther's 95 Theses (if he exists) reach maybe 200 people. Reformation doesn't happen, or happens locally. Scientific Revolution delayed indefinitely since papers can't be widely shared. MEDIUM-TERM (1500): Literacy remains exclusively for monks and nobility. No mass Bible, no individual relationship with text...
When building an alternate history setting or exploring 'what if' scenarios
- •Second and third-order effects are more interesting than the obvious first-order changes
- •Some things stay the same despite the change. Finding those makes history feel more real.
Common Mistakes to Avoid
Creating powers without costs. If magic or technology has no downsides, there's no tension. Every advantage should come with a price.
Explaining too much. Readers don't need to understand exactly how the faster-than-light drive works. They need to understand what happens if it breaks.
Making fantasy and sci-fi elements purely aesthetic. If your world has dragons, they should affect agriculture, warfare, architecture, everything. If nothing changes, why include them?
Frequently Asked Questions
Fantasy and sci-fi prompts help you create the speculative elements that make these genres work: magic systems, future technologies, alien cultures, and alternate histories. Good genre fiction builds impossible things with internal logic that makes them feel real. These templates help you design systems that create story opportunities rather than plot holes. Use them when you're building worlds, developing supernatural rules, or trying to make the fantastical feel grounded.
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