Smart NPCs
In-game characters that understand natural language, remember what the player did and act accordingly.
See it in a sceneTryll is a middleware for game engines (Unity, Unreal Engine 5 and proprietary engines), that lets you integrate in-game AI in one prompt. Built by game developers, Epic MegaGrants Recipient.
Coming soon · Get notifiedGive characters a realistic mind — stop trying to script every interaction
In-game characters that understand natural language, remember what the player did and act accordingly.
See it in a sceneSay what you actually want to say. Tryll handles speech-to-text and text-to-speech on the player’s device, with no servers in between. You get voiced NPCs in various languages including Korean, Japanese, without recording every line.
Hear it in a sceneYou build the world and set the rules. Tryll creates agents and makes sure they follow them. Players get unscripted interactions and a reliable, immersive experience.
How agents follow your rulesTryll unlocks game mechanics that were not possible before. You could be the first to turn that into a new genre — and become the next Notch.
Browse examplesTalk your way through a short scene and watch the characters react in real time
Play the demoIn-game AI that works out of the box — from Basic NPC and Advanced NPC to Developer Tools and Performance & Memory usage
See all featuresAsk questions, share what you’re building and get help from the engineers who built Tryll
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Hervé Lange · Sr. Technical Director
“Language models represent the next major leap for interactive experiences. With Tryll Engine, I finally found technology that actually works for game developers, backed by an outstanding team whose support has been invaluable in navigating this new world.”

“Tryll Engine allows us to bring a new level of interactivity to storytelling without sacrificing creative control. Our writers carefully craft the narrative, characters, and dialogue content, while Tryll understands players’ questions and intentions, allowing characters to respond naturally while staying true to the story, their personalities, and the knowledge defined by our writers. It’s technology that empowers our writers rather than replaces them, giving us the freedom to create experiences that traditional dialogue systems simply couldn’t deliver.”

Sergey Plyaka
“While developing Voice Heist, a game where players control a robot using natural voice commands, one of my biggest challenges was making speech recognition and intent understanding work together to create a seamless gameplay experience. Tryll helped me experiment with different AI models, quickly identify issues, compare what worked best, and iterate faster, allowing me to focus on making the robot feel responsive and alive.”
Add the plugin to your project. The Tryll tab appears in your editor.
Download an open model into the project. Tryll runs it on the player’s GPU — nothing else to host.
Connect your lore, define the role and allowed actions, then test the first conversation in the Dialog Tester.
Everything you need after the first launch
No seats. No per-token fees. A 1% royalty once a shipped game passes $200k USD in gross revenue.
Coming soon · Get notifiedFor game developers, individuals and small businesses under $200k USD, and educators and schools with no revenue limits
Contact salesExtra services
Custom pricingTell us about your game. We’ll ask the right questions, find the fit and plan the next step together.