Area effects
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Area effects are game mechanics confined to certain areas of Gielinor. The effects either deal damage to a player, or lower their stats.
Some area effects are based on a game chunk, a 64x64 set of game squares. As such, players can often find out where they are safe by looking at chunks on the World Map. Some area effects can also be stalled by opening interfaces. Some effects that run on timers can also be avoided by simply logging out before the timer reaches 0.
List of area effects
| Effect | Area | Summary | Nullification, reduction, and reversal | Fatal? |
|---|---|---|---|---|
| Chill | Several chunks north of Trollheim | All stats drained by 1 every 10 ticks | Fire of Unseasonal Warmth | No |
| Darkness | Various underground areas | Darkness; damage; varies by location | Light sources, Fire of Eternal Light (only at some locations) | Yes |
| Desert heat | Desert (excluding cities/towns) | 1-10 damage every 40-220 ticks | Desert clothing, choc-ice, waterskins, circlet of water, desert amulet 4 | Yes |
| Drowning | Underwater | Loss of mermaid tears, returned to surface | Fishbowl helmet and diving apparatus, medallion of the deep; air bubbles; pufferfish | No |
| Extreme heat | Karuulm Slayer Dungeon | 4 damage dealt every tick | Boots of stone, boots of brimstone, granite boots, elite Kebos diary | Yes |
| Fog | Last Man Standing | 1-3 damage every other tick | Entering the safe zone | Yes |
| Greater fog | Last Man Standing | Up to 10 damage every tick | Entering the safe zone | Yes |
| Prayer restoration | In or around the Demonic Ruins | 3 Prayer points restored every 5 ticks | None | N/A |
| Swamp decay | Main area of Mort Myre Swamp | 1-3 damage dealt every 200 ticks | Blessed silver sickle, rod of Ivandis, Fire of Dehumidification | Yes |
| Sailing hazards | Various sea areas | Varies by location; see main page | Innoculation station, eternal brazier, better mast and sails and helms | Yes |
| Sanity | Shadow Realm | 5-160 damage dealt every 2 ticks | Shadow blocker, revitalising idol, killing cyan lost souls | Yes |
| Smoke | Smoke Dungeon | 10 damage dealt every 20 ticks | Gas mask, facemask, Slayer helmet (all variations) | No |
| Vine damage | Small section of Draynor Manor | 1 damage dealt every 5 ticks | None | Yes |
| Volcanic eruption | Near Wilderness volcanoes | 1 damage dealt when a fireball lands | None | Yes |
| Warmth | Wintertodt's prison | 12-16 damage periodically | Warm clothing | Yes |
| Sailing hazards | |
|---|---|