How to Play

Space Empires 4X

1-4 players 60-240 min 7.7 Board Game Geek Rating

Space Empires delivers classic 4X gameplay where players develop galactic civilizations to defeat opponents. Navigate hazardous space terrain while building fleets, establishing colonies, and advancing through extensive tech trees. Features carriers, cloaking, mining, terraforming, and alien encounters with streamlined rules spanning just 8-11 pages, maintaining strategic depth without complexity.

Published 2011

Space Empires 4X

Get Ready

Setup the game with these step-by-step instructions before diving into your turn.

1
Form battle lines
Arrange combat ships in lines (A-F for Asteroids/Nebula formations)
2
Reveal ship information
Uncloak Ship Types and Numbers during combat setup
3
Eliminate Decoys
Remove Decoy units when ships are revealed
4
Position Shield Projectors
Shield Projectors acquire their targets
5
Sweep Mines
Detonate remaining mines in the combat area
6
Determine ground unit status
Ground Units may be dropped on a Colony after the second round

On Your Turn

What you can do during your turn.

1
Roll for fleet firing
Fleet with at least 2x the firing ships earns Fleet Size Bonus (+1 Attack Strength)
2
Determine weapon class priority
Fire in order of Weapon Class (if tied, compare Tactics; else defender first)
3
Select firing unit and target
Select firing unit and target; compare Experience
4
Calculate attack value
Add firing unit's Attack Strength, Tech (0 for Asteroids), and Fleet Size Bonus
5
Calculate defense value
Subtract target's Defense Strength (Quasar 0), Tech (Nebula ∧ Quasar 0) to determine TH (To-Hit) number
6
Roll to hit
Roll die; if result ≤ TH, deal 1 hit (Ion Storm x2); a roll of 1 always hits except against TN
7
Apply damage
Each hit is 1 damage (TN, M x2); cumulative damage ≥ Hull Size destroys target
8
Roll for experience
Roll die for each unit captured or destroyed; if result ≤ 2x Hull Size, firing unit gains Group gains Experience (max once per battle)
9
Continue combat
If both sides have firing ships, repeat Step 7 (units may retreat instead of fire)
10
Remove non-combat ships
Else any remaining non-combat ships belonging to the losing side are destroyed
11
Check for space resolution
If space combat is resolved with no Ground Units dropped and Colony did not originally belong to attacker, it may be bombarded
12
Add attack bonuses
Attacking ships add Attack Strength and Tech
13
Subtract colony defense
Subtract Colony's Defense Strength to determine TH
14
Fire each ship
Each ship fires once per turn; a TN firing on a Colony or Planet immediately turns it to Asteroids
15
Apply colony hits
Each hit reduces Colony one step
16
Drop ground units
Attacker may drop Ground Units (Barren needs Terraform 1)
17
Muster defenders
Defender musters 1 Militia per Colony CP
18
Form ground battle lines
Larger force may screen combat units
19
Resolve first round firing
Units from Tran without Dropships may not fire in the first round
20
Compare forces for support
For each Grav in excess of the opponent, 1 unit gets +1 Attack +1 Defense support; Cyb equals 3 Grav; Grav and Cyb cannot gain support
21
Determine ground fire order
Fire in order of Weapon Class (if tied, defender first); Tech has no effect
22
Continue until resolved
No surrender, no retreat; repeat Step 4 until one side is destroyed
23
Determine colony outcome
If all attackers are destroyed, Colony is defended; remove remaining Militia
24
Process captured colony
If all defenders are destroyed, Colony is captured
25
Initiate boarding attack
BD boarding attack is at F-class
26
Calculate boarding strength
TH is Attack Strength minus Hull Size (adjust for Experience, Sec Forces)
27
Identify captured ships
Captured ships are Green, don't count for Fleet Size Bonus, and may not attack, retreat or be screened for one full round
28
Scrap at SY
Scrap at SY to gain one level in each superior mounted technology type
29
Apply alternate empire capture
Captured Alternate Empire ships yield one mounted tech before they self-destruct

Winning

How to claim victory.

1
Survive combat
Roll results 1-8 indicate survival in Crew Survival checks
2
Check elimination
Roll results 9-10 indicate unit is eliminated
3
Determine group elimination
Roll result +3 indicates group eliminated
4
Check friendly status
Roll result +3 with no friendly units in hex ends the game for that force
5
Complete mission objectives
Roll on Mission table for benefits including drawing resources, gaining ship size, Move Tech, Shipyard, CP, Advanced Flagship, or Alien Tech
6
Control colonies
Maintain Colony defense strength to prevent enemy capture
7
Destroy enemy forces
Eliminate opposing combat units and colonies to achieve victory

watch & Learn

Let the pros teach you with these top videos.

How To Setup And Play Space Empires 4X

How To Setup And Play Space Empires 4X

Instructional

Space Empires, full ruleset, by JMG : #10

Space Empires, full ruleset, by JMG : #10

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FULL rules

Looking for the full details? Grab the complete rulebook as a downloadable PDF.

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