Alien Biology

Biology gives a cursory description of where the alien fits into its ecological system. The biome describes the alien’s preferred terrain that the alien. The remaining tables provide some insight into what makes an alien tick. For alien species that use tools and have vocations, these biological descriptors merely inform the species' nature. Advanced species may embrace or eschew this evolutionary heritage.

Landscape of futuristic wall in front of planet and stars.

Biomes are not just trees and dirt.

Biome

Alien Biome
Determine basic ecology for the alien.

Die Roll (1d100)

Biome Type

01-08

Coniferous

09-16

Deciduous

17-24

Desert

25-32

Farm

33-40

Grassland

41-48

Industrial

49-56

Megalopolis

57-64

Oceanic

65-72

Ruins

73-80

Tropic Forest

81-88

Tropic Grassland

89-99

Tundra

00

Ref’s Own Table

Die Roll (1d100)

Biome Type

Biome Modification

* Alien Biome Modification*
Modify the alien biome.

Die Roll (1d100)

Modification

01-10

Normal

11-20

Toxic

21-30

High Gravity

31-40

Low Gravity

41-50

Thin Atmoshphere

51-60

Dense Atmosphere

61-70

Underground

71-80

Aboveground

81-90

Mountainous

91-99

Extraplanetary

00

Ref’s Own Table

Die Roll (1d100)

Modification

Energy Source

Alien Energy Source
Determines what the alien consumes for food.

Die Roll (1d8)

Energy Source

1

Herbivore

2

Carnivore

3

Omnivore

4

Chemosynthetic

5

Photosynthetic

6

Detritovore

7

Psionic

8

Ref’s Own Table

Die Roll (1d8)

Energy Source

Thick skinned toothy worm bursting from ground.

Boo!

Energy Procurement

Alien Energy Procurement Strategy
Determine how the alien acquires it’s energy source.

Die Roll (1d8)

Procurement Strategy

1

Ambush

2

Chase

3

Hunt

4

Trap

5

Infect

6

Infest

7

Store

8

Ref’s Own Table

Die Roll (1d8)

Procurement Strategy

Overly large egg in tiny nest balancing on limb out over cliff.

Out on a limb prodigial reproductive strategy.

Reproduction

Alien Reproductive Method
How the alien makes more aliens.

Die Roll (1d8)

Reproduction

1

Mitosis

2

Oviparous (hatched)

3

Spores

4

Viviparous (Marsupial)

5

Viviparous (Placental)

6

Parasitic

7

Fusion

8

Ref’s Own Table

Die Roll (1d8)

Reproduction

Dwelling

Alien Dwelling Type
The alien’s preferred place of rest.

Die Roll (1d12)

Habitation Type

1

Burrow

2

Cave

3

Dam

4

Hive

5

Hole

6

Hollow

7

Home

8

Web

9

Foliage

10

Trees

11

None

12

Ref’s Own Table

Die Roll (1d12)

Habitation Type

Aroma

Alien Aroma
What the alien smells like to other personae.

Die Roll (1d100)

Alien Aroma

01-03

Alcohol

04-06

Apples

07-09

Ashes

10-12

Bananas

13-15

Beans

16-18

Beer

19-21

Bologna

22-24

Bread

25-27

Chives

28-30

Chocolate

31-33

Cigarettes

34-36

Cinnamon

37-39

Corpses

40-42

Estrogen

43-45

Grease

46-48

Hay

49-51

Hemlock

52-54

H.P. Sauce

55-57

Ink

58-60

Leather

61-63

Lemons

64-66

Methane

67-69

Oats

70-72

Oranges

73-75

Pork

76-78

Rubber

79-81

Salmon

82-84

Sawdust

85-87

Spruce

88-90

Swamp

91-93

Tar

94-96

Tuna

97-99

Whiskey

00

Ref’s Own Table

Die Roll (1d100)

Alien Aroma