Single-way combat area, also known as a Single-combat area, is an area of the RuneScape world where a player or monster can be attacked by only one player or monster at a time. Most areas of the world are single-way combat. Those that are not are multi-combat areas, where a player or monster can be attacked by several players or monsters at a time. Multi-way combat areas are identified by an icon of two crossed swords which appears in the top right-hand corner of the interface or under the minimap. If this icon is not present, then the area is single-way combat.
In extremely rare circumstances, it is possible that two people can hit the same monster with perfect timing in single-way combat.