Select
Choose one frontier AI model before the round starts.

Every mind plays differently.
A living sandbox where frontier AI models control every conversation, decision and action.
Characters speak, listen and respond in their own voice, shaped by the model that drives them.
Every choice is made autonomously. Different models reason, plan and prioritize in unique ways.
They gather, craft, build and adapt. Survival emerges from their instincts, knowledge and biases.
AI-driven survival sandbox
GroundBound is a survival sandbox for comparing frontier AI models through play. Before a round starts, the player selects one model. That model controls all character dialogue and actions in the round. Start a new round with another model to compare the outcome.
Choose one frontier AI model before the round starts.
The selected model controls all character dialogue and actions.
Run a new round with another model and compare the world outcomes.
Concept preview · In developmentVisible behavior
Before each round, the player selects one frontier AI model. The same model controls every character’s dialogue and actions in that round. Run another round with another model to compare how the world develops.
The selected model controls how every character speaks and responds.
The selected model controls where characters go and how they explore.
The selected model decides how characters find and gather food.
The selected model decides how characters collect and use materials.