Wander radius

The wander radius of a non-player character refers to the maximum number of game tiles it can walk from its spawn point. In general conversation, the term is typically used to describe an NPC's overall wander area, alongside the terms wander range, wander distance, and roam range.

With some exceptions, monsters have an invisible square drawn around their spawn point, in which they will randomly wander. Due to the nature of RuneScape's tiles, drawing an odd-numbered square of tiles around a monster results in an equal number of tiles from the centre of the square to any of the tiles along its perimeter; as such, the wander radius refers to this distance from the spawn to the edge, and the range refers to the area of the square itself.

As mentioned above, NPC can pathfind freely inside all of the drawn square. The NPC will move in a two-step process of first selecting one tile at a time inside the wander area, and then pathfinding to the tile selected. This process will also occur outside the wander range, and will only halt if the NPC is in combat, in interaction mode (see other ranges below) or when retreating. The wander range is almost always smaller than the maximum range of an NPC, but they are independent.^[1]

Bob the Jagex Cat has the largest wander range. Bob respawns outside his human Unferth's house in Burthorpe after each system update, after which he can roam up to 30,000 tiles in any direction.^[2] This is virtually unlimited. Cob also has a seemingly unlimited wander range, but spawns on Zeah. Neither Bob nor Cob can cross obstacles or water, thus limiting them to just the walkable tiles on the continents they spawn on. Implings have the highest wandering radiuses of any other NPCs in the game (100 tiles from their spawn point), and they are able to go almost anywhere as they can also move over invalid tiles and water. They cannot pass through objects, however.

Monkey archers, the Black Knight Titan, and other stationary NPCs have the lowest wander radiuses (zero) due to not being able to move at all. The Evil Chicken used to also have a wander radius of zero before being retired as a random event.

Quest NPCs usually have a low wander range, ensuring that players can find them during or to start their quest. An exception is Romeo, who, although always in Varrock, wanders all around the fountain and sometimes enters the Varrock general store.

There are many types of ranges that are calculated for NPCs. Among them is the interaction range. The origin of the interaction range is the south-west tile of the NPC, which will dynamically change as the NPC is moving around.

The interaction range, also known as talking range, is the area in which the NPC will remain focused on the player, putting it in a state known as interaction mode. When in interaction mode, the NPC will constantly face the player. Interaction mode is triggered by initiating dialogue between the player and the NPC, usually through the "talk-to" action. The interaction range is usually only 1, but NPCs in unreachable areas (such as bankers or NPCs in prison) will have a bigger interaction range.

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Combat	Attack range Attack speed Auto Retaliate Autocast Combat triangle Special attacks Hitsplat Tanking Magical melee Magical ranged Ranged magic Ranged melee Typeless
Maximum hit	Maximum magic hit Maximum melee hit Maximum ranged hit Monster maximum hit
Damage per second	Damage per second/Melee Damage per second/Ranged Damage per second/Magic
Mechanics	Aggressiveness Buffs Elemental weakness Flinching Hit delay Retaliation Retreat Safespot Spawning Successful hit Maximum damage cap Flat armour Tolerance Wander radius PJ timer Red-X Line of sight
Other	Single-way combat Multicombat area Singles-plus combat Player killing