4. BASIC WORLDBUILDING . . 62
USING WORLDS . . . . . . . . . . . . . . . . . . . . 63
Dramatic Roles . . . . . . . . . . . . . . . . . . . 63
Depth of Detail . . . . . . . . . . . . . . . . . . . 66
MAPPING THE GALAXY . . . . . . . . . . . . . 67
Astronomical Features . . . . . . . . . . . . . 68
Distances and Scales . . . . . . . . . . . . . . . 68
The Frequency of Worlds. . . . . . . . . . . 70
Choosing a Preferred Scale . . . . . . . . . . 72
WORLD DESIGN SEQUENCE . . . . . . . . 73
Step 1: Concept . . . . . . . . . . . . . . . . . . . 74
Step 2: World Type . . . . . . . . . . . . . . . . 74
Why World Types? . . . . . . . . . . . . . . . . . 77
Step 3: Atmosphere. . . . . . . . . . . . . . . . 78
Toxicity Rules . . . . . . . . . . . . . . . . . . . . . 78
Step 4: Hydrographic Coverage. . . . . . 81
Step 5: Climate . . . . . . . . . . . . . . . . . . . 83
Step 6: World Size. . . . . . . . . . . . . . . . . 84
Step 7: Resources and Habitability. . . 87
Habitability for Aliens . . . . . . . . . . . . . . 89
SOCIAL PARAMETERS . . . . . . . . . . . . . . . 89
Step 8: Settlement Type . . . . . . . . . . . . 89
Step 9: Technology Level . . . . . . . . . . . 90
Step 10: Population. . . . . . . . . . . . . . . . 91
Altering the Colony Population Table . . . 93
Step 11: Society Type . . . . . . . . . . . . . . 93
Step 12: Control Rating . . . . . . . . . . . . 94
Step 13: Economics . . . . . . . . . . . . . . . 95
Step 14: Bases and Installations . . . . . 96
5. ADVANCED
WORLDBUILDING. . . . . . 99
GENERATING STAR SYSTEMS . . . . . . 100
Stellar Classification . . . . . . . . . . . . . . 100
Step 15: Number of Stars. . . . . . . . . . 100
Step 16: Star Masses. . . . . . . . . . . . . . 101
Step 17: Star System Age . . . . . . . . . . 101
Step 18: Stellar Characteristics . . . . . 102
Step 19: Companion Star Orbits . . . . 105
Step 20: Locate Orbital Zones . . . . . . 106
Step 21: Placing First Planets . . . . . . 107
Step 22: Place Planetary Orbits . . . . . 108
Step 23: Place Worlds . . . . . . . . . . . . . 109
Step 24: Place Moons . . . . . . . . . . . . . 111
GENERATING WORLD DETAILS . . . . . 113
Step 25: World Types . . . . . . . . . . . . . 113
Step 26: Atmosphere. . . . . . . . . . . . . . 114
Step 27: Hydrographics . . . . . . . . . . . 114
Step 28: Climate . . . . . . . . . . . . . . . . . 114
Step 29: World Sizes. . . . . . . . . . . . . . 114
Step 30: Dynamic Parameters . . . . . . 115
Step 31: Geologic Activity . . . . . . . . . 119
Step 32: Resources and
Habitability . . . . . . . . . . . . . . . . . . 121
Step 33: Settlement Type . . . . . . . . . . 121
Step 34: Technology Level . . . . . . . . . 122
Step 35: Population. . . . . . . . . . . . . . . 122
Step 36: Society Type . . . . . . . . . . . . . 123
Step 37: Control Rating . . . . . . . . . . . 123
Step 38: Economics . . . . . . . . . . . . . . 123
Step 39: Bases and Installations . . . . 123
SPECIAL CASES . . . . . . . . . . . . . . . . . . . .124
Gas Giant Moons . . . . . . . . . . . . . . . . 124
Tide-Locked Worlds . . . . . . . . . . . . . . 125
Massive Stars. . . . . . . . . . . . . . . . . . . . 126
Red Dwarf Stars . . . . . . . . . . . . . . . . . 127
Brown Dwarf Stars . . . . . . . . . . . . . . . 128
Rogue Worlds . . . . . . . . . . . . . . . . . . . 128
Terraformed Worlds . . . . . . . . . . . . . . 129
OTHER OBJECTS . . . . . . . . . . . . . . . . . .130
Asteroids and Comets. . . . . . . . . . . . . 130
Artificial Structures . . . . . . . . . . . . . . 132
Who Needs Planets, Anyway? . . . . . . . 132
Megastructures . . . . . . . . . . . . . . . . . . 133