All nineteen policies by development stage, with build cost, population window, prerequisites and the exact values of their five effect channels.
Applies to game version 0.2.0Published on 16 August 2026
How to read the tables
Direct GDP compounds monthly on the settlement’s GDP and is capped at ten years of compounding (for example, +5%/yr caps at about +63%).
Development boosts are monthly points into named fields, scaled down by remaining headroom as a field approaches 100. Boosts stack across policies.
Population effect is either a boomtown surge toward the stated target (scaled by the settlement’s transport service score, minimum 30%) or an extra migration pull. Only the strongest single policy counts.
Demand multiplies the passenger and cargo demand the settlement generates as an origin; unlisted axes are ×1.0. Only the strongest single policy counts per axis.
Fund is the annual percentage of the settlement’s GDP contributed to the transport fund, paid monthly; contributions stack.
Requires: “rail” means a non-ferry rail connection; “expressway/HSR” means an E-grade road or high-speed rail connection.
Assignment is allowed at the settlement’s current development stage or one stage away. A settlement’s first three policies cost base price; each further policy costs ×1.5 more than the last.
