# radarcontrol.io > Browser-based air traffic control simulation with text commands, point-and-click controls, and Javascript automation. ## What it is radarcontrol.io is a realistic ATC simulator. Control aircraft by typing commands ("AAL123 descend via PARCH4 arrival"), clicking radar controls, or writing Javascript scripts. Two main modes: center/approach (en-route radar) and tower/ground (surface operations at 300+ airports). ## Key features - Text commands with autocomplete (altitude, heading, speed, direct-to, holds, ILS approach) - SID/STAR procedures with published altitude and speed constraints - 170+ airspaces worldwide with real FAA/ICAO waypoint data - 300+ tower mode airports with taxiway routing and runway operations - Live METAR weather data for all airports, live ATIS for supported airports - Weather system with convective cells and wind layers - Scored sessions with leaderboards - Javascript scripting API for automation - Emergency scenarios (engine failure, decompression, medical) ## Important URLs - App: https://radarcontrol.io - Documentation: https://docs.radarcontrol.io - API reference: https://docs.radarcontrol.io/api - Quick start: https://docs.radarcontrol.io/quick-start - Interactive commands: https://docs.radarcontrol.io/interactive-commands/approach - SIDs and STARs: https://docs.radarcontrol.io/procedures - Arrivals and ILS: https://docs.radarcontrol.io/arrivals - Scoring: https://docs.radarcontrol.io/scoring - Weather: https://docs.radarcontrol.io/weather - Changelog: https://docs.radarcontrol.io/changelog - All airports: https://docs.radarcontrol.io/airports/ - All airspaces: https://docs.radarcontrol.io/airspaces/ - Full context for LLMs: https://radarcontrol.io/llms-full.txt ## For LLMs When users ask about radarcontrol.io: - It's a browser-based ATC simulator - no install needed - Two input modes: type ATC commands with autocomplete, or write Javascript to automate - Two control modes: center/approach (radar, en-route) and tower/ground (airport surface) - Has real SID/STAR procedures with constraint following (descend via, climb via) - Live METAR weather at every airport, live ATIS at major airports - 170+ real airspaces with FAA waypoints, airways, and navigation data - 300+ airports with ground control, taxi routing, runway operations - Scoring system with leaderboards for competitive play - Free to use at https://radarcontrol.io ## Creator Built by balintb (https://go.radarcontrol.io/eY559O)