Difference between revisions of "Threat (Long War)"
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The Threat Category Level at the end of a month determines the [[Alien_Missions_(Long_War)#Mission_Table|types of missions the aliens will field]] in the next month and also the amount of threat to start with at the beginning of the month. Threat Category is derived from the total threat generated in the previous month, with one exception: if an [[Missions_(Long_War)#Alien_Base_Assault|Alien Base]] was raided in the previous month, the Threat Category is automatically set to 4. | The Threat Category Level at the end of a month determines the [[Alien_Missions_(Long_War)#Mission_Table|types of missions the aliens will field]] in the next month and also the amount of threat to start with at the beginning of the month. Threat Category is derived from the total threat generated in the previous month, with one exception: if an [[Missions_(Long_War)#Alien_Base_Assault|Alien Base]] was raided in the previous month, the Threat Category is automatically set to 4. | ||
| − | :Threat Category Level: Threat / 2 (rounded down and capped between 0 and 4) | + | :Threat Category Level: Threat Counter / 2 (rounded down and capped between 0 and 4) |
The chance that the aliens will reroll the location of a [[Alien_Missions_(Long_War)#Harvest|Harvest mission]] if it resides in XCOM territory (i.e. has a satellite over it) is proportional to the current months threat category. | The chance that the aliens will reroll the location of a [[Alien_Missions_(Long_War)#Harvest|Harvest mission]] if it resides in XCOM territory (i.e. has a satellite over it) is proportional to the current months threat category. | ||
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:Reroll chance: Threat Category Level / 10 (up to 40% at threat category 4) | :Reroll chance: Threat Category Level / 10 (up to 40% at threat category 4) | ||
| − | This reduces [[Alien_Resources_(Long_War)|Alien Resources]] by 5. The reroll algorithm will always pick a random new location without a satellite. If no such location is available (i.e. XCOM has all 16 countries covered by a satellite), the reroll is canceled and no cost is accrued | + | This reduces [[Alien_Resources_(Long_War)|Alien Resources]] by 5. The reroll algorithm will always pick a random new location without a satellite. If no such location is available (i.e. XCOM has all 16 countries covered by a satellite), the reroll is canceled and no cost is accrued. |
==See also== | ==See also== | ||
Revision as of 08:32, 1 November 2021
The Aliens adjust their strategic operations based on how threatening they perceive XCOM to be. Threat determines which kinds of missions the aliens will run each month & the likelihood that a particular landed UFO will be a trap.
Threat Counter
XCOM starts each month with a minimum amount of threat, derived from the Threat Category (see below) from last month.
- Monthly Starting Threat: last months Threat Category Level - 2, minimum 0
A running tally of threat is incremented over the course of the month as XCOM successfully launches operations against alien UFOs.
- Shoot down or successfully assault a Scout, Fighter, Raider, Destroyer, or Abductor: +1
- Shoot down or successfully assault a Harvester, Terror Ship, Transport, Battleship, Assault Carrier, or Overseer: +2
This threat counter is used to determine the Threat Category in the following month as well as the likelihood that a particular landed UFO will be a Trap UFO in the current month.
Trap UFOs
Trap UFOs have significantly increased numbers of aliens; generally, the smaller and more unassuming the UFO type, the greater the relative increase. Traps can only occur when UFOs successfully land.
- Scout (Small): 9-11 Landing → 20-23 Trap (plus the command pod of 1 alien)
- Raider (Medium): 15-20 Landing → 24-36 Trap (plus the command pod of 2 aliens)
- Abductor/Harvester (Large Type A): 18-25 Landing → 28-45 Trap (plus the command pod of 4 aliens)
- Transport/Terror Ship (Large Type B): 28-39 Landing → 40 Trap (plus the command pod of 6 aliens)
The chance of any particular landed UFO being a Trap is based on the current months threat counter. Thus, it is significantly lower in the beginning of the month when the counter is close to 0, but much more likely by the end of the month if XCOM has been diligent in shooting down UFOs.
- Chance of Trap: Threat Counter / 30
Threat Category Level
The Threat Category Level at the end of a month determines the types of missions the aliens will field in the next month and also the amount of threat to start with at the beginning of the month. Threat Category is derived from the total threat generated in the previous month, with one exception: if an Alien Base was raided in the previous month, the Threat Category is automatically set to 4.
- Threat Category Level: Threat Counter / 2 (rounded down and capped between 0 and 4)
The chance that the aliens will reroll the location of a Harvest mission if it resides in XCOM territory (i.e. has a satellite over it) is proportional to the current months threat category.
- Reroll chance: Threat Category Level / 10 (up to 40% at threat category 4)
This reduces Alien Resources by 5. The reroll algorithm will always pick a random new location without a satellite. If no such location is available (i.e. XCOM has all 16 countries covered by a satellite), the reroll is canceled and no cost is accrued.
See also
 Long War: Aliens
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Alien Life Forms • Alien Missions • Alien Deployment • Alien Artifacts • Alien Research • Alien Resources • UFOs • XCOM Threat |