Rust Heatmap reads the public Rust server list every five minutes and records what it shows: players, wipes, settings and history.
The in-game server browser tells you what is online now. It does not tell you how busy a region is at 20:00 on a Saturday, or whether a server holds its population after wipe day. Rust Heatmap keeps that record so you can see where activity is high and where it is low before you join.
The data comes from two places. Steam's public Rust server list gives names, player counts, queues and the tags each server sets. Direct queries to each server give map seed, FPS and entity counts where the server answers. Some servers do not answer, and for those the site shows only what Steam publishes. Population history, wipe times and rankings are built from what those sources return.
Heat on this site means measured player activity: live counts, hourly and daily peaks, wipes and wipe schedules. Rankings use players over the past week, hour by hour, so a server that is busy most days sits above one that fills for a single evening. Lists are ordered by that activity, never by payment.
Rust Heatmap is independent and run by Rust players. It is not affiliated with Facepunch Studios and nothing here is endorsed by them. Server names, descriptions and images belong to the people who run those servers. If a detail about your server looks wrong, the cause is usually in the server's own settings, and any change shows within about five minutes. If it still looks wrong, write to hello@rustheatmap.org.