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The Umber Synthesis CHROMATIC FRONTIER

The Umber Synthesis
The Umber Synthesis
Expansion:
Chromatic Frontier
Colors:
OrangeGreen
Commodities:
3
Starting Tech:
Dark Energy Tap, Psychoarchaeology
Home System:
Umber Trinity
Home Planets:
Umber I (2/1)
Umber II (1/1)
Umber III (1/2)
Starting Units:
1 Space Dock
1 Destroyer
2 Carriers
1 Mech (Entropic Disruptor)
1 Fighter
5 Infantry (Frontline Automatons)

The Umber Synthesis is a faction of advanced synthetic beings introduced in the Chromatic Frontier expansion. These sentient machines excel at ground warfare through superior droid infantry and combat mechs, while their ability to scramble unit abilities in their territory makes them nearly impossible to dislodge once entrenched.

1 Faction Abilities

Synthetic Entropic Scrambling
In systems with your structures, unit abilities cannot be used by other units. Text abilities are unaffected.
Universal Cosmic Understanding
When you activate a system, you may discard 1 action card to choose 1 anomaly. You ignore the effects of that anomaly during this tactical action.
Advanced Technological Integration
When you gain control of a planet with a technology specialty, you may pay 2 trade goods to ready it.

2 Faction Promissory Note

Cosmic Survey Data
After you activate a system, you may reveal this card and put it in your play area to choose 1 anomaly and ignore its effects during this tactical action. Return this card to the Umber Synthesis player at the end of your turn.

3 Faction Technologies

Frontline Automaton II (Infantry Upgrade)
Prerequisites: ●●
Cost: 0.5 | Combat: 6

After this unit is destroyed, roll 1 die. If the result is 6 or greater, place the unit on this card. At the start of your next turn, place each unit that is on this card on a planet you control in your home system or on a planet with one of your mechs.
Entropic Disruptor II (Mech Upgrade)
Prerequisites:
Cost: 2 | Combat: 4

Unit abilities cannot be used by other units in this system. Text abilities are unaffected.
SUSTAIN DAMAGE

4 Faction-Specific Units

4.1 Infantry

Frontline Automaton
COST: 0.5
COMBAT: 7

5 Breakthrough

Positronic Decryption Protocols
Synergy: Propulsion (Blue) / Warfare (Red)

After you activate a system, you may exhaust this card. Your units in this system ignore the effects of SYNTHETIC ENTROPIC SCRAMBLING and Entropic Disruptor II.

7 Flagship

Umber Mothership
COST: 8
COMBAT: 7(×2)
MOVE: 1
CAPACITY: 5
After you move this unit, you may place 2 fighters from your reinforcements in this system.
SUSTAIN DAMAGE

8 Mech

Entropic Disruptor
COST: 2
COMBAT: 5
SUSTAIN DAMAGE

9 Leaders

Terraforming Integrator B42
AGENT
Terraforming Integrator B42
When a player gains control of a planet with a technology specialty, they may exhaust this agent to ready that planet.
Technological Applicator D47
COMMANDER
Technological Applicator D47
Unlock: Own 1 technology in each of the 4 colors.
When you research a technology, you may ignore 1 prerequisite. If you do not, you may spend 1 fewer resource when researching that technology (to a minimum of 0).
Mechatronic Multiplicator Z99
HERO
Mechatronic Multiplicator Z99
Synthetic Overload
Unlock: Have 3 scored objectives.
ACTION: Purge this card. Place up to 10 infantry from your reinforcements on planets you control.

10 Lore

Home System Umber Trinity
Planets Umber I (2/1) — The original homeworld, its biological past preserved in museum strata beneath a surface now given over entirely to research facilities and production complexes.

Umber II (1/1) — A mid-system world converted into the Synthesis's primary materials processing hub, staffed almost entirely by autonomous synthetic units.

Umber III (1/2) — The outermost world, cold and sparse, home to the long-range observation arrays and deep-space research installations that first identified the stars worth reaching.
Population ~1.5 billion Integrates
Government Meritocracy
Rank is earned through measurable contribution — those who produce lead, those who do not are reassigned.
Disposition Austere
Comfort is inefficiency. Every resource, every action, every life is measured against its contribution to the Synthesis.
Tendency Scientific
Every battlefield observation feeds back into research. Every casualty is data. Every victory is a hypothesis confirmed.
Necessity, Then Doctrine

The Umber Synthesis did not set out to become what they are. They set out to survive. Their three worlds — designated with the clinical pragmatism that now defines their entire culture — were resource-poor and environmentally hostile, supporting a biological population too small to defend itself and too scattered to develop meaningful industry. The solution they arrived at was not political or military. It was scientific. Synthetic augmentation began as necessity, became practice, became doctrine, and finally became identity. There is no longer a meaningful distinction between the Synthesis and its technology — they are the same project, at different stages of completion.

Their society rewards contribution with a precision that biological civilizations rarely achieve. Every member of the Synthesis is continuously evaluated — not by peers or politicians, but by systems that measure output, efficiency, and advancement against objective benchmarks. Promotion is automatic when thresholds are met. Reassignment is equally automatic when they are not. There is no appeal process because there is no one to appeal to. What might sound oppressive to an outside observer is, to the Synthesis, simply accuracy — the removal of the bias and sentiment that prevent other civilizations from deploying their people correctly.

The Integrates

The Synthesis no longer has a baseline biological form — or rather, the original form has become so thoroughly augmented that it is functionally irrelevant. Their earliest members were compact, brown-toned humanoids from resource-scarce worlds, and this ancestral form is still visible in their chassis proportions and facial architecture. What surrounds it, however, is the Synthesis: synthetic musculature visible at the joints, sub-dermal processing arrays that create faint geometric ridge patterns across the skull and shoulders, and eyes replaced entirely by optical sensors that glow a steady amber-umber in low light. The degree of augmentation varies by function — senior processors are barely recognizable as biological in origin, while newly integrated members may look almost entirely organic. There is no aesthetic preference for one or the other. Augmentation is applied where it improves performance, and nowhere else.

11 Gallery

Strategy Overview by Claude

For playstyle tips, strengths, weaknesses, and key synergies, see the full strategy guide.

→ The Umber Synthesis Strategy Guide → The Umber Synthesis Planets

The Umber Synthesis - A Chromatic Frontier Faction
Homebrew Design for Twilight Imperium 4th Edition
"Synthetic Ground Supremacy"

Twilight Imperium is a trademark of Fantasy Flight Games / Asmodee. This is an unofficial homebrew expansion not affiliated with or endorsed by Fantasy Flight Games or Asmodee. All original game content, mechanics, and terminology remain the property of their respective rights holders.