Engine · Create
Agent Dialogue
Voice, NPCs, and behaviors. AI characters that perceive, react, and play alongside the people in your world.
Give a character a voice and a personality in a single line. Gessa's agents talk, remember what happened, and react to the people around them, so the figures in your world feel like they are actually there, not running a script.
Characters, not scripts
NPCs perceive, respond, and hold a personality across a whole session.
They remember
Conversations and events carry forward, so characters know your history.
Authored in a sentence
Describe who they are and how they speak; the behavior follows.
Part of one engine
Describe it. Gessa builds it.
Worlds, games, agents, and simulations, built from the same engine, in your browser, in minutes.