Sap: School Days

Sap: School Days is a single-player game about nurturing an evolving ecology by placing tiles on a board. You choose biomes, mechanical elements and organisms, then observe how they interact as the environment expands and collapses.

Place tiles strategically

Each turn, you are offered five tiles to choose from, and limited energy determines what you can pay for. After each turn, you give up control over your placed tiles, so you need to plan your layout ahead. As you progress, new challenges and strategic options emerge from layers of interacting mechanics.

Balance the ecology

The goal is exploration rather than victory: discover as many tiles as you can while keeping the ecology balanced. If the board fills up, the game ends; if the system collapses, the ecology fails. Each playthrough can reveal new interactions in the ecosystem.