Practice GMing
with AI Adventurers
Level up your GM skills in a risk-free sandbox. Create AI party members with unique personalities, run encounters, and watch emergent roleplay unfold.
No credit card required
See It In Action
This is what running a session looks like. AI players respond, roll dice, and stay in character.
Live Session Preview
Shared Chat
Party Builder Preview
AI Player 1
Persona, voice, and secrets
Higher tiers unlock larger party sizes.
Build Your Dream Party
Four ways to create characters - pick the method that fits your style.
Quick Random
One click, instant adventurer. Perfect for jumping straight in when you just want to practice.
AI Powered
Describe what you want and let AI craft a unique character complete with backstory and secrets.
Prose Description
Paste a backstory or write freely. The AI will roleplay based on your narrative.
Character Sheet
Granular control with stats, traits, and goals. Ideal for testing specific party compositions.
Immersive GM Tools
Everything you need to run realistic encounters and practice your craft.
Initiative Tracking
Toggle initiative mode and AI players act in turn order automatically.
Integrated Dice
Roll any combination. AI players roll automatically for skill checks.
Secrets & Whispers
"You recognize the hooded figure from your past..."
"I was once part of this guild..."
Send private info to specific characters. They'll react without spoiling others.
Practice for the Real Table
Improve your skills anytime so you can bring your best to the table.
Help us build the ultimate GM tool
Share GMprentice with your tabletop crew and shape the future of solo practice.
Free to try. No credit card required.