Screeps Arena spawnCreep(): Find Your Spawn
Find your Screeps Arena Spawn with getObjectsByPrototype(), call spawnCreep(body), read object or error results, and avoid mixing Arena with MMO syntax.
TOPIC · 25 GUIDES
Creeps Screeps guides
Focused English articles connected to creeps, organized with the same filters used by the main article library.
Screeps: Clean Dead Creep Memory Safely
Clean stale Memory.creeps entries by comparing them with Game.creeps. Delete only confirmed dead names and keep custom task indexes in sync.
Screeps renewCreep(): Requirements, Cost, and Return Codes
Learn StructureSpawn.renewCreep() requirements, TTL and Energy formulas, Boost and CLAIM limits, return codes, and how to verify renewal on the next tick.
Screeps Lab boostCreep(): Requirements, Usage, and Return Codes
Learn StructureLab.boostCreep() requirements, bodyPartsCount usage, return codes, current-tick scheduling, and how to verify exact boosted body parts afterward.
Screeps Creep.pull(): Coordinate Two Creeps in One Tick
Coordinate Creep.pull(), the puller's movement, and target.move(puller) in the same tick, handle adjacency and fatigue correctly, and verify the pair moved later.
Screeps Energy Delivery: Creep to Spawn
Make one Creep transfer Energy to a named Spawn, keep delivery mode until it is empty, and connect harvesting and delivery into a first repeatable round trip.
Screeps Harvest Energy: Build Your First Creep.harvest() Loop
Use Creep.harvest() to find an active Source, move into range, keep harvesting until your Creep is ready to deliver, and read Source-specific return codes without treating ERR_FULL as a harvest result.
Screeps Spawn Exit Blocked: Diagnose Directions and Occupied Tiles
Confirm a blocked Screeps Spawn exit from current spawning state and all eight adjacent tiles, then fix direction policy without confusing accepted intents with observed birth.
Screeps Tower Healing: Injury Ratio, Missing Hits, and Range
Find injured owned Creeps, rank lower hit ratios before missing hits and nearest-Tower range, require active owned Towers with TOWER_ENERGY_COST, save heal() results, avoid caching stale targets, and leave over-heal optimization to a later dispatcher.
Screeps Tombstone and Ruin Recovery: Reach the Loot Before It Decays
Recover Tombstone and Ruin resources without chasing doomed targets: reject incomplete structure-aware paths, block closed hostile Ramparts, preserve target identity, and verify the processed withdraw amount on the next tick.
Screeps Multi-Spawn Queue: Priority, Deduplication, and Shared Energy
Centralize Creep demand, deduplicate stable request keys, rank emergency and replacement work, reserve shared room Energy locally, assign each idle Spawn once, and verify accepted names on later ticks.
Screeps recycleCreep(): Verify the Exact Creep Retirement
Bind one retirement request to exact Spawn and Creep IDs, reserve both objects, record pending evidence only after OK, then match the exact destruction event and Creep-tile Tombstone.