Screeps First Room: Find the Editor and Console
Find your first Screeps Room, code editor, and Console, then use read-only commands to identify visible Rooms, Spawns, Creeps, Sources, and the Controller.
ARTICLE LIBRARY
Practical Screeps articles for the problem you need to solve
Browse 64 published guides by system, difficulty, content type, or topic. Start with What Is Screeps? A Programming Strategy Game or follow the beginner sequence through How to Combine Your First Screeps Room Loop.
64 matching guides
Screeps Ticks and Game Loop: Why Your Code Runs Repeatedly
Understand a Screeps tick, Game.time, and module.exports.loop, then run safe observations that show why actions and state changes appear across later ticks.
Screeps Harvest Energy: Your First Creep Script
Make one named Screeps Creep find a Source, move into range, and harvest Energy with a small script you can verify across later ticks.
Screeps Energy Delivery: Creep to Spawn
Make one Creep transfer Energy to a named Spawn, preserve delivery mode across ticks, and complete its first Source-to-Spawn round trip.
Screeps Creep Body Parts: WORK, CARRY, and MOVE
Inspect one Creep's active WORK, CARRY, and MOVE parts, then use its action result, Store, fatigue, and damage to diagnose missing abilities.
Screeps spawnCreep(): Create Your First Creep
Use dryRun to validate a WORK-CARRY-MOVE body, submit one safe spawnCreep() request, read its return code, and verify the new Creep across later ticks.
Screeps Creep Roles: Harvester, Upgrader, and Builder
Learn why Harvester, Upgrader, and Builder are player-defined responsibilities, how roles differ from body parts, and why a Creep name does not create behavior.
Screeps upgradeController(): Build Your First Upgrader Loop
Build one Upgrader1 loop that harvests from an active Source, moves within Controller range 3, spends Energy with upgradeController(), and switches state across ticks.
What Is Screeps? A Programming Strategy Game
Learn what Screeps is, how JavaScript controls its persistent world, and how Rooms, Creeps, Sources, Spawns, and Controllers work together for new players.
How to Create a Market Order Safely in Screeps
Create one reviewed market order with a one-time Memory request, validate Terminal ownership, calculate the 5% fee and Credit reserve, reject duplicates, snapshot the request, handle ERR_FULL without hard-coding a disputed order limit, and verify the order afterward.
How to Execute a Reviewed Market Deal Safely
Execute one specified sell order with a one-time request, refresh the current order snapshot, use amount rather than remainingAmount, enforce a price ceiling, Credit and Terminal Energy reserves, estimate transaction cost, disable before deal(), and verify the transaction afterward.
How to Send Resources Between Terminals Safely
Plan one direct Terminal transfer with a one-time request, validate TERMINAL_MIN_SEND and the 100-character description, separate ordinary-resource and Energy budgets, preserve reserves, disable before send(), and verify outgoing transactions and Store changes afterward.
Publication standard
English articles are published only after source review, official API checks where applicable, JavaScript syntax review where code is present, duplicate-intent checks, and a final score of at least 96.