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 Atmosphere
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