Difference between revisions of "Alien Appearance Ratios"

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{| {{StdTable}} border = "1"
 
{| {{StdTable}} border = "1"
 
|-
 
|-
−
! Colspan = "6" {{StdDescTable Heading}} align = "left" | January - February
+
! Colspan = "6" {{StdDescTable Heading}} align = "left" | January
 
|- {{StdTable Sub Heading}}
 
|- {{StdTable Sub Heading}}
 
| Mission/Race
 
| Mission/Race
Line 11: Line 11:
 
|-  
 
|-  
 
| [[Alien Research]]
 
| [[Alien Research]]
−
| 70
+
| 70%
−
| 10
+
| 10%
 
| -
 
| -
 
| -
 
| -
−
| 20
+
| 20%
 
|-  
 
|-  
 
| [[Alien Harvest]]
 
| [[Alien Harvest]]
−
| Sectoid
+
| 50%
−
| Snakeman
+
| 20%
−
| Ethereal
+
| -
−
| Muton
+
| -
−
| Floater
+
| 30%
 
|-
 
|-
 
| [[Alien Abduction]]
 
| [[Alien Abduction]]
−
| Sectoid
+
| 60%
−
| Snakeman
+
| -
−
| Ethereal
+
| -
−
| Muton
+
| -
−
| Floater
+
| 40%
 
|-
 
|-
 
| [[Alien Infiltration]]
 
| [[Alien Infiltration]]
−
| Sectoid
+
| 60%
−
| Snakeman
+
| 20%
−
| Ethereal
+
| -
−
| Muton
+
| -
−
| Floater
+
| 20%
 
|-
 
|-
 
| [[Alien Base]]
 
| [[Alien Base]]
−
| Sectoid
+
| 30%
−
| Snakeman
+
| 20%
−
| Ethereal
+
| -
−
| Muton
+
| -
−
| Floater
+
| 50%
 
|-
 
|-
 
| [[Alien Terror]]
 
| [[Alien Terror]]
−
| Sectoid
+
| 30%
−
| Snakeman
+
| -
−
| Ethereal
+
| -
−
| Muton
+
| -
−
| Floater
+
| 70%
 
|-  
 
|-  
 
| [[Alien Retaliation]]
 
| [[Alien Retaliation]]
−
| Sectoid
+
| 60%
−
| Snakeman
+
| 20%
−
| Ethereal
+
| -
−
| Muton
+
| -
−
| Floater
+
| 20%
 
|}
 
|}
  
−
 
−
 
−
Research 70 10 0 0 20
 
−
Harvest 50 20 0 0 30
 
−
Abduction 60 0 0 0 40
 
−
Infiltration 60 20 0 0 20
 
−
Base 30 20 0 0 50
 
−
Terror 30 0 0 0 70
 
−
Retaliation 60 20 0 0 20
 
  
 
{| {{StdTable}} border = "1"
 
{| {{StdTable}} border = "1"
 
|-
 
|-
−
! Colspan = "6" {{StdDescTable Heading}} align = "left" | March - April
+
! Colspan = "6" {{StdDescTable Heading}} align = "left" | February - March  
 
|- {{StdTable Sub Heading}}
 
|- {{StdTable Sub Heading}}
 
| Mission/Race
 
| Mission/Race
Line 82: Line 73:
 
|-  
 
|-  
 
| [[Alien Research]]
 
| [[Alien Research]]
−
| Sectoid
+
| 60%
−
| Snakeman
+
| 10%
−
| Ethereal
+
| -
−
| Muton
+
| -
 +
| 30%
 
|-  
 
|-  
 
| [[Alien Harvest]]
 
| [[Alien Harvest]]
−
| Sectoid
+
| 50%
−
| Snakeman
+
| -
−
| Ethereal
+
| -
−
| Muton
+
| -
−
| Floater
+
| 50%
 
|-
 
|-
 
| [[Alien Abduction]]
 
| [[Alien Abduction]]
−
| Sectoid
+
| 40%
−
| Snakeman
+
| -
−
| Ethereal
+
| -
−
| Muton
+
| -
−
| Floater
+
| 60%
 
|-
 
|-
 
| [[Alien Infiltration]]
 
| [[Alien Infiltration]]
−
| Sectoid
+
| 50%
−
| Snakeman
+
| 20%
−
| Ethereal
+
| -
−
| Muton
+
| -
−
| Floater
+
| 30%
 
|-
 
|-
 
| [[Alien Base]]
 
| [[Alien Base]]
−
| Sectoid
+
| 40%
−
| Snakeman
+
| 20%
−
| Ethereal
+
| -
−
| Muton
+
| -
−
| Floater
+
| 40%
 
|-
 
|-
 
| [[Alien Terror]]
 
| [[Alien Terror]]
−
| Sectoid
+
| 60%
−
| Snakeman
+
| -
−
| Ethereal
+
| -
−
| Muton
+
| -
−
| Floater
+
| 40%
 
|-  
 
|-  
 
| [[Alien Retaliation]]
 
| [[Alien Retaliation]]
−
| Sectoid
+
| 30%
−
| Snakeman
+
| 30%
−
| Ethereal
+
| -
−
| Muton
+
| -
−
| Floater
+
| 40%
 
|}
 
|}
  
−
2 - 3
 
−
Sectoid Snakemen Ethereals Muton Floater
 
−
Research 60 10 0 0 30
 
−
Harvest 50 0 0 0 50
 
−
Abduction 40 0 0 0 60
 
−
Infiltration 50 20 0 0 30
 
−
Base 40 20 0 0 40
 
−
Terror 60 0 0 0 40
 
−
Retaliation 30 30 0 0 40
 
  
 
{| {{StdTable}} border = "1"
 
{| {{StdTable}} border = "1"
 
|-
 
|-
−
! Colspan = "6" {{StdDescTable Heading}} align = "left" | May - June
+
! Colspan = "6" {{StdDescTable Heading}} align = "left" | April - June  
 
|- {{StdTable Sub Heading}}
 
|- {{StdTable Sub Heading}}
 
| Mission/Race
 
| Mission/Race
Line 152: Line 135:
 
|-  
 
|-  
 
| [[Alien Research]]
 
| [[Alien Research]]
−
| Sectoid
+
| 30%
−
| Snakeman
+
| 10%
−
| Ethereal
+
| -
−
| Muton
+
| 30%
 +
| 30%
 
|-  
 
|-  
 
| [[Alien Harvest]]
 
| [[Alien Harvest]]
−
| Sectoid
+
| 30%
−
| Snakeman
+
| -
−
| Ethereal
+
| -
−
| Muton
+
| 30%
−
| Floater
+
| 40%
 
|-
 
|-
 
| [[Alien Abduction]]
 
| [[Alien Abduction]]
−
| Sectoid
+
| 50%
−
| Snakeman
+
| -
−
| Ethereal
+
| -
−
| Muton
+
| -
−
| Floater
+
| 50%
 
|-
 
|-
 
| [[Alien Infiltration]]
 
| [[Alien Infiltration]]
−
| Sectoid
+
| 20%
−
| Snakeman
+
| 20%
−
| Ethereal
+
| -
−
| Muton
+
| 50%
−
| Floater
+
| 10%
 
|-
 
|-
 
| [[Alien Base]]
 
| [[Alien Base]]
−
| Sectoid
+
| 10%
−
| Snakeman
+
| 40%
−
| Ethereal
+
| -
−
| Muton
+
| 30%
−
| Floater
+
| 20%
 
|-
 
|-
 
| [[Alien Terror]]
 
| [[Alien Terror]]
−
| Sectoid
+
| 20%
−
| Snakeman
+
| 60%
−
| Ethereal
+
| -
−
| Muton
+
| -
−
| Floater
+
| 20%
 
|-  
 
|-  
 
| [[Alien Retaliation]]
 
| [[Alien Retaliation]]
−
| Sectoid
+
| 20%
−
| Snakeman
+
| 20%
−
| Ethereal
+
| -
−
| Muton
+
| 40%
−
| Floater
+
| 20%
 
|}
 
|}
  
−
4 - 5
 
−
Sectoid Snakemen Ethereals Muton Floater
 
−
Research 30 10 0 30 30
 
−
Harvest 30 0 0 30 40
 
−
Abduction 50 0 0 0 50
 
−
Infiltration 20 20 0 50 10
 
−
Base 10 40 0 30 20
 
−
Terror 20 60 0 0 20
 
−
Retaliation 20 20 0 40 20
 
  
 
{| {{StdTable}} border = "1"
 
{| {{StdTable}} border = "1"
 
|-
 
|-
−
! Colspan = "6" {{StdDescTable Heading}} align = "left" | July - August
+
! Colspan = "6" {{StdDescTable Heading}} align = "left" | July - September
 
|- {{StdTable Sub Heading}}
 
|- {{StdTable Sub Heading}}
 
| Mission/Race
 
| Mission/Race
Line 222: Line 197:
 
|-  
 
|-  
 
| [[Alien Research]]
 
| [[Alien Research]]
−
| Sectoid
+
| 20%
−
| Snakeman
+
| 10%
−
| Ethereal
+
| -
−
| Muton
+
| 40%
 +
| 30%
 
|-  
 
|-  
 
| [[Alien Harvest]]
 
| [[Alien Harvest]]
−
| Sectoid
+
| 10%
−
| Snakeman
+
| -
−
| Ethereal
+
| -
−
| Muton
+
| 40%
−
| Floater
+
| 50%
 
|-
 
|-
 
| [[Alien Abduction]]
 
| [[Alien Abduction]]
−
| Sectoid
+
| 30%
−
| Snakeman
+
| -
−
| Ethereal
+
| -
−
| Muton
+
| -
−
| Floater
+
| 70%
 
|-
 
|-
 
| [[Alien Infiltration]]
 
| [[Alien Infiltration]]
−
| Sectoid
+
| 10%
−
| Snakeman
+
| 10%
−
| Ethereal
+
| 40%
−
| Muton
+
| 30%
−
| Floater
+
| 10%
 
|-
 
|-
 
| [[Alien Base]]
 
| [[Alien Base]]
−
| Sectoid
+
| 10%
−
| Snakeman
+
| 40%
−
| Ethereal
+
| 10%
−
| Muton
+
| 20%
−
| Floater
+
| 20%
 
|-
 
|-
 
| [[Alien Terror]]
 
| [[Alien Terror]]
−
| Sectoid
+
| 10%
−
| Snakeman
+
| 20%
−
| Ethereal
+
| 40%
−
| Muton
+
| 20%
−
| Floater
+
| 10%
 
|-  
 
|-  
 
| [[Alien Retaliation]]
 
| [[Alien Retaliation]]
−
| Sectoid
+
| 20%
−
| Snakeman
+
| 20%
−
| Ethereal
+
| 20%
−
| Muton
+
| 20%
−
| Floater
+
| 20%
 
|}
 
|}
  
−
6 - 7
 
−
Sectoid Snakemen Ethereals Muton Floater
 
−
Research 20 10 0 40 30
 
−
Harvest 10 0 0 40 50
 
−
Abduction 30 0 0 0 70
 
−
Infiltration 10 10 40 30 10
 
−
Base 10 40 10 20 20
 
−
Terror 10 20 40 20 10
 
−
Retaliation 20 20 20 20 20
 
  
 
{| {{StdTable}} border = "1"
 
{| {{StdTable}} border = "1"
 
|-
 
|-
−
! Colspan = "6" {{StdDescTable Heading}} align = "left" | September and Beyond
+
! Colspan = "6" {{StdDescTable Heading}} align = "left" | October and Beyond
 
|- {{StdTable Sub Heading}}
 
|- {{StdTable Sub Heading}}
 
| Mission/Race
 
| Mission/Race
Line 292: Line 259:
 
|-  
 
|-  
 
| [[Alien Research]]
 
| [[Alien Research]]
−
| Sectoid
+
| 30%
−
| Snakeman
+
| 10%
−
| Ethereal
+
| -
−
| Muton
+
| 30%
 +
| 30%
 
|-  
 
|-  
 
| [[Alien Harvest]]
 
| [[Alien Harvest]]
−
| Sectoid
+
| 30%
−
| Snakeman
+
| -
−
| Ethereal
+
| -
−
| Muton
+
| 30%
−
| Floater
+
| 40%
 
|-
 
|-
 
| [[Alien Abduction]]
 
| [[Alien Abduction]]
−
| Sectoid
+
| 50%
−
| Snakeman
+
| -
−
| Ethereal
+
| -
−
| Muton
+
| -
−
| Floater
+
| 50%
 
|-
 
|-
 
| [[Alien Infiltration]]
 
| [[Alien Infiltration]]
−
| Sectoid
+
| 20%
−
| Snakeman
+
| 20%
−
| Ethereal
+
| 10%
−
| Muton
+
| 40%
−
| Floater
+
| 10%
 
|-
 
|-
 
| [[Alien Base]]
 
| [[Alien Base]]
−
| Sectoid
+
| 10%
−
| Snakeman
+
| 20%
−
| Ethereal
+
| 40%
−
| Muton
+
| 20%
−
| Floater
+
| 10%
 
|-
 
|-
 
| [[Alien Terror]]
 
| [[Alien Terror]]
−
| Sectoid
+
| 20%
−
| Snakeman
+
| 30%
−
| Ethereal
+
| 20%
−
| Muton
+
| 20%
−
| Floater
+
| 10%
 
|-  
 
|-  
 
| [[Alien Retaliation]]
 
| [[Alien Retaliation]]
−
| Sectoid
+
| 10%
−
| Snakeman
+
| 10%
−
| Ethereal
+
| 40%
−
| Muton
+
| 20%
−
| Floater
+
| 20%
 
|}
 
|}
  
−
8 +
 
−
Sectoid Snakemen Ethereals Muton Floater
 
−
Research 30 10 0 30 30
 
−
Harvest 30 0 0 30 40
 
−
Abduction 50 0 0 0 50
 
−
Infiltration 20 20 10 40 10
 
−
Base 10 20 40 20 10
 
−
Terror 20 30 20 20 10
 
−
Retaliation 10 10 40 20 20
 
  
 
<noinclude>
 
<noinclude>
 
== Notes ==
 
== Notes ==
 +
* All rows except '''Alien Terror''' are unused in the January table; the non-Terror mission for January 1999 is hardcoded to be a Sectoid Alien Research mission in the same zone as X-Com's first base.
 +
* All '''Retaliation''' rows are unused. Retaliation missions triggered by shooting down a UFO are performed by the race that crewed the UFO shot down. Scheduled Retaliation missions at the start of the month are evenly distributed among the races (20% each), regardless of month (this can produce "early" Ethereals, although "early" Mutons would require researching The Martian Solution in February).
 +
* All months beyond October 1999 use the October table.
 +
* All values listed above are interpreted from probability tables in [[GEOSCAPE.EXE]].
 +
* Alien bases will appear upon completion of Alien Base and Alien Infiltration missions. Interfering with the mission will delay the base's appearance, but cannot prevent it. They will be crewed by the same race that performed the Alien Base or Alien Infiltration mission.
 +
* [[Alien Supply]] missions will always be crewed by the same race as the base itself.
 +
* The [[Cydonia]] mission has a pre-defined crew setup.
 +
 +
== See also ==
 +
*[[Alien Appearance Ratios (TFTD)]] for the appearance ratios from [[TFTD|Terror From the Deep]].
  
−
* The crew of already established [[Alien Base|Alien Bases]], ships on [[Alien Supply]] missions, and [[Alien Terror|Terror Sites]] will be crewed by the same crew that founded the base or terror site.
+
{{Aliens Navbar}}
  
−
== See Also ==
+
{{Alien Missions Navbar}}
  
 +
[[Category:Alien Life Forms]]
 
[[Category:Data tables]]
 
[[Category:Data tables]]
 
</noinclude>
 
</noinclude>
 +
[[Category:Enemy Unknown/UFO Defense]]

Latest revision as of 05:29, 27 December 2023

January
Mission/Race Sectoid Snakeman Ethereal Muton Floater
Alien Research 70% 10% - - 20%
Alien Harvest 50% 20% - - 30%
Alien Abduction 60% - - - 40%
Alien Infiltration 60% 20% - - 20%
Alien Base 30% 20% - - 50%
Alien Terror 30% - - - 70%
Alien Retaliation 60% 20% - - 20%


February - March
Mission/Race Sectoid Snakeman Ethereal Muton Floater
Alien Research 60% 10% - - 30%
Alien Harvest 50% - - - 50%
Alien Abduction 40% - - - 60%
Alien Infiltration 50% 20% - - 30%
Alien Base 40% 20% - - 40%
Alien Terror 60% - - - 40%
Alien Retaliation 30% 30% - - 40%


April - June
Mission/Race Sectoid Snakeman Ethereal Muton Floater
Alien Research 30% 10% - 30% 30%
Alien Harvest 30% - - 30% 40%
Alien Abduction 50% - - - 50%
Alien Infiltration 20% 20% - 50% 10%
Alien Base 10% 40% - 30% 20%
Alien Terror 20% 60% - - 20%
Alien Retaliation 20% 20% - 40% 20%


July - September
Mission/Race Sectoid Snakeman Ethereal Muton Floater
Alien Research 20% 10% - 40% 30%
Alien Harvest 10% - - 40% 50%
Alien Abduction 30% - - - 70%
Alien Infiltration 10% 10% 40% 30% 10%
Alien Base 10% 40% 10% 20% 20%
Alien Terror 10% 20% 40% 20% 10%
Alien Retaliation 20% 20% 20% 20% 20%


October and Beyond
Mission/Race Sectoid Snakeman Ethereal Muton Floater
Alien Research 30% 10% - 30% 30%
Alien Harvest 30% - - 30% 40%
Alien Abduction 50% - - - 50%
Alien Infiltration 20% 20% 10% 40% 10%
Alien Base 10% 20% 40% 20% 10%
Alien Terror 20% 30% 20% 20% 10%
Alien Retaliation 10% 10% 40% 20% 20%


Notes

  • All rows except Alien Terror are unused in the January table; the non-Terror mission for January 1999 is hardcoded to be a Sectoid Alien Research mission in the same zone as X-Com's first base.
  • All Retaliation rows are unused. Retaliation missions triggered by shooting down a UFO are performed by the race that crewed the UFO shot down. Scheduled Retaliation missions at the start of the month are evenly distributed among the races (20% each), regardless of month (this can produce "early" Ethereals, although "early" Mutons would require researching The Martian Solution in February).
  • All months beyond October 1999 use the October table.
  • All values listed above are interpreted from probability tables in GEOSCAPE.EXE.
  • Alien bases will appear upon completion of Alien Base and Alien Infiltration missions. Interfering with the mission will delay the base's appearance, but cannot prevent it. They will be crewed by the same race that performed the Alien Base or Alien Infiltration mission.
  • Alien Supply missions will always be crewed by the same race as the base itself.
  • The Cydonia mission has a pre-defined crew setup.

See also

UFO BadgeX-COM: Enemy Unknown/UFO Defense
X-COM Soldiers • Heavy Weapons Platforms
Aliens: Floater • Sectoid • Snakeman • Ethereal • Muton

Terror Units: Reaper • Cyberdisc • Chryssalid • Zombie • Sectopod • Celatid • Silacoid

Stats Time Units • Energy (Stamina) • Health • Bravery • Reactions • Firing Accuracy • Throwing Accuracy • Strength • Psionic Strength • Psionic Skill • Melee Accuracy • Stun • Morale • Rank • Fatal Wounds
Data Alien Stats • Damage Modifiers • Alien Appearance Ratios • Alien Weapon Loadouts
UFO Badge X-COM: Enemy Unknown/UFO Defense
Alien Missions:Alien Origins • The Martian Solution • Cydonia or Bust • Alien Research • Alien Harvest
Alien Abduction • Alien Infiltration • Alien Base • Alien Terror • Alien Retaliation • Alien Supply
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