Alien Appearance Ratios
December (1998) - 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 - May | |||||
---|---|---|---|---|---|
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% |
June - July | |||||
---|---|---|---|---|---|
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% |
August 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
- The first appearance rate block includes December 1998, however the game starts in January 1999. It is included because the tables cover 2 month blocks.
- All months beyond August 1999 use the August table.
- All Retaliation rows are unused. Retaliation missions are generated in response to shooting down enemy craft, with a set probability that is scaled by the difficulty level multiplier.
- All values listed above are interpreted off probability tables obtained directly from GEOSCAPE.EXE.
- The crew of already established Alien Bases, ships on Alien Supply missions, and Terror Sites will be crewed by the same crew that founded the base or terror site, and are not affected by these tables.
- Creation of alien bases are the end result of a successful Alien Base mission. They also have a very high probability of appearing at the end of an infiltration mission, often corresponding with the withdrawal of a funding nation.
- The Cydonia mission has a pre-defined crew setup.
See also
- Alien Appearance Ratios (TFTD) for the appearance ratios from Terror From the Deep.
X-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 |