Tools
Practical calculators built from cited game mechanics. Each public tool explains its formula, limits, source data, and the route decision it is meant to support.
Power Runtime Calculator
Select a battery, direct downstream device count, and night length to calculate runtime and the remaining safety margin.
Use it before adding cold storage, chargers, or workbenches to the same backup line. The result shows whether the circuit survives the outage window or needs another battery branch.
Open Calculator →How tools are published
A calculator is only listed here after its inputs map to a public mechanic, its result can be checked by hand, and its limitations are written next to the interactive controls.
Tool review standard
Public tools are meant to answer repeatable planning questions, not replace route judgment. The power calculator starts with the most common base failure: a battery survives one night in testing, then fails after one extra refrigerator, charger, or workbench is wired downstream. The tool keeps the arithmetic visible so a player can decide whether to add another battery, shorten the circuit, or move nonessential devices to a separate line.
What belongs in this tool index
Repeatable route choices
A tool must help with a decision players repeat across runs: whether a battery circuit is safe, which ingredient route is shorter, or when a resource loop is worth the risk. One-off trivia and keyword-only calculators are not published here.
Visible limits
If a mechanic changes with a patch, depends on wiring layout, or ignores player behavior, the tool states that limit near the result. A calculator should make uncertainty easier to reason about, not hide it behind a clean number.