
They have three higher yield sources at 4000 energy each and one mineral with an extractor already built. These rooms do not have a controller and surround the center room in a sector. (EX: E50N20 is a crossroads, E87S0 is a highway room.) Unless modified on a private server or seasonal, highway rooms should always have at least one 0 at the end of one of their directions and crossroads have two. Crossroad sections of these rooms (the corners where 4 sectors meet) also have interShard portals to travel to other shards on the main server. They can not be claimed or reserved however, they do hold high-level harvestable items such as PowerBanks for power and deposits for factory production. These rooms do not have controllers and border each sector dividing it from the next sector. A player must start in one of these rooms by placing a spawn, if a player has no rooms of this type left they are 'dead' but can respawn elsewhere. These rooms' controller can be upgraded in level from zero (unclaimed/reserved) to eight by having a creep pump energy into the controller using upgradeController and allow for more owned structures and better defenses to be built. Each room will also have one type of mineral. These rooms come with between one to two sources, which if unclaimed start at 1500 energy and claimed/reserved boost to 3000. They can also be reserved by a user using a creep with claim parts.

The main type of room in Screeps, these rooms have a controller that can be claimed by a user with enough spare GCL and allow for the building of owned structures. These happen over exit tiles, when the room borders a respawn/novice zone. There are a few different types of rooms, depending on their features.Ī Controller room, exit tiles shown left, spawn 'walls' shown right. sectors and rooms follow repeating patterns out from the center, it is possible to regex or process the string to determine the type of room it will be, which is useful for avoiding/finding types of rooms when pathfinding or other tasks. W0N0 Would be closest to the center, 1 room west and 1 room north, W62N38 would be 63 rooms West of center and 39 rooms north of center. The first character of the string is either W for west, or E for east, followed by 1-3 numbers depending on distance from the 'center' (Note: Could be more with a larger map, but MMO only goes to 3), then another character either N for North or S for south followed by another 1-3 numbers. A room's name is determined by its location on the map, specifically by where it falls into a region.

Creeps can move around the room at a pace of one tile or roomPosition as long as their fatigue and movement parts allow. Rooms are inter-connected by exit tiles on their outside edges, but an exit to every adjacent room does not always exist.

Inside blue are the 'claimable' rooms, inside red are the unclaimable source-keeper rooms, inside the gold at-center is the center room.Ī room, is the main play field of Screeps and is a 2 dimensional plane measuring from x:0 y:0 at top left to x:49 y:49 at bottom right containing 2500 roomPositions/tiles, each tile is given a type of terrain either plain, swamp or wall. An example of a sector, bordered by shared highway rooms to other sectors.
