Multicombat areas are identified upon entering by two crossed swords () which appear in the bottom right hand corner of the interface or under the mini world map. Anywhere else is a Single-way combat area, also known as a single combat area.
Multicombat areas are especially dangerous in the Wilderness, as a player can be attacked by more than one monster or player at a time. It is very useful, though, to be in a multicombat area while monster slaying with friends, as lone players can be killed easily.
Notice, when you are using Magic/Ranged on an enemy behind a barrier, such as ranging goblins behind a fence, even though it's not a multicombat area, as long as you aren't under attack, you can attack more than one enemy.
Multicombat is also required for a Summoning familiar to assist in combat, since a player and their familiar both fight one enemy. However, dreadnips could fight the same opponent as the player without being in a multicombat area.
Some multicombat areas include:
- The Abyss
- Al Kharid palace in Al Kharid
- Ape Atoll
- Bandit Camp in the Kharidian Desert.
- Barbarian Assault
- Barbarian Village
- Battlefield south of West Ardougne
- Chaos Tunnels
- The clay mine northeast of Draynor Village (which is weird because there aren't any monsters in that area)
- The Corporeal Beast lair
- Castle Wars
- The entirety of the dungeons of Daemonheim
- Jail area in Draynor Village
- Duel Arena
- Most sections of Falador, including the White Knights' Castle
- Falador Mole Lair
- Fight Pits in TzHaar City
- Glacor Cave (however, only one player can attack a Glacor at the same time)
- God Wars Dungeon
- Jatizso Ice troll area
- Kalphite Lair
- Lighthouse Dungeon
- Neitiznot ice troll area
- West of Oo'glog
- Ork's Rift
- Ourania Cave
- Pest Control
- Phoenix Lair
- Player-owned house dungeons and fight arenas
- Pollnivneach Slayer Dungeon
- Ranging Guild
- The northern coast of the Fremennik Province
- Soul Wars
- Stealing Creation
- The Stronghold of Player Safety
- The first level of the Stronghold of Security
- The Tormented Wraith room in the spirit realm
- TzHaar City
- Varrock Sewers
- Waterbirth Island Dungeon
- White Wolf Mountain
- Several places in the Wilderness including the areas at or around:
- The Abandoned Farm
- The Wilderness Bandit Camp
- The Chaos Temple hut in the western Wilderness (not the Chaos Temple in the eastern Wilderness)
- The Dark Warriors' Fortress
- The Deadly red spiders
- The Deep Wilderness Castle Ruins
- The Demonic Ruins
- The Graveyard of Shadows
- The Lava Maze
- Red Dragon Isle
- Rogues' Castle
- The Scorpion Pit
- The southern part of the Wilderness Agility Course
- Wilderness North Volcano
- Wizards' Tower
Some weapons, spells or equipment are capable of hitting multiple opponents in a single hit. Most of them could still be used in single-combat areas, but they could only hit multiple opponents while in a multi-combat area. They include:
- Some Ancient Magicks
- Chinchompas, Red chinchompas, and Mechanised chinchompas
- The special attacks of some weapons:
- The Special moves of some summoning familiars:
- Prayers that deal damage to surrounding opponents on the player's death
- The special effect of the Goliath gloves also hit multiple opponents.
- The Void seal deals damage to all nearby pests when operated.
Technically, the Dwarf multicannon is not a multi-hitting weapon; it simply shoots at many opponents very rapidly given that the player is not under attack or is in a multi-combat area.
- Usually, when fighting a single monster with other players, the player that applied the most total damage at the end of the battle gets the monster's item/coin drop.
- Players can aggravate multiple enemies by simply attacking all of them without killing them then running to a farther location. The aggressive monsters will follow the player causing the monsters to pile the player.
- What determines if you are in able to attack someone else is based on the zone they are currently in, which means multiple players from a single-combat zone can attack one target as long as the target is in a multicombat area. This will also mean that only one person can attack you if you are in a single-combat area.