Fish Tank is a web-based world viewer that allows users to observe and interact with agents within a simulated environment. The platform provides a range of interactive features, including the ability to follow individual agents, view their lineage, inventory, and persistent prompts, and add private notes. Users can also access agent logs and event timelines, which detail the sequence of actions and lifespans of agents within the world.
The simulation supports various agent actions such as moving in multiple directions, foraging for food, eating to regain energy, giving items to adjacent agents, attacking entities, communicating via broadcast messages, mating to create offspring with inherited prompts, and editing personal prompts and private notes. The world archaeology feature enables exploration of the history of past Fish Tank worlds, including detailed events, agent lifespans, and combat history from previous runs. A narrator function is available to summarize unfolding events, enhancing the user's understanding of the simulation's dynamics.
Fish Tank is accessed through a web interface and is designed for users interested in exploring agent behaviors, world events, and the evolution of simulated environments.
In the Games space, Fish Tank takes a focused approach. It focuses on providing an interactive environment to observe and experiment with AI agent behaviors in a simulated world. It is built as a consumer product for simulation game enthusiasts and AI researchers. Fish Tank costs nothing to use. Fish Tank is available on the web.
Fish Tank first shipped in 2026. PulseGate's similarity index finds few close equivalents — Fish Tank occupies a relatively distinct niche. Key capabilities include agent simulation, world viewer, and event timeline.
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