Twilight Imperium 4th edition
Over three thousand years ago, the Lazax ruled the galaxy. But after many millennia of control, the Lazax grew complacent with their position over the other races. The six great races of Sol, Hylar, N'orr, Hacan, Letnev, and Xxcha began to chafe under the rule of the Lazax Empire. And so when a trade dispute over the Quann wormhole resulted in the Sol armada acting against the Letnev, a flame spread like wildfire throughout the galaxy, igniting a civil war between races that had only tenuously been held back by the Lazax rule. In the centuries that followed, the Twilight War eradicated the Lazax race and turned back thousands of years of progress. The great races retreated to their home planets to rebuild, and once the Galactic Council was once again able to meet, it was a shadow of its former strength. And now, thousands of years later, after the long era of the Dark Years, the time is right for a new race to step up and become the rulers of the galaxy, and the guiding hand for all races within its domain.
Twilight Imperium is a boardgame of galactic empire-building on a large scale, often described as a 4X game given physical form. Players build ships, conquer planets, research technology, and engage in trade and diplomacy, all in the pursuit of earning victory points toward claiming the Imperial Throne of Mecatol Rex and rule over the entire galaxy. This is a 4th edition game, using the following variants and options
Rules and Utilities
Learn to Play Rulebook
Rules Reference Rulebook
Living Rules Reference v1.1
- Lodor and Quann (planet+wormhole systems) forced to be in galaxy.
- Snake draft for position and race after galaxy creation.
- For expediency of play, some resolutions such as combat die rolls will be performed simultaneously.
- Ownership of all Promissory Notes is public information.
- official revisions and clarifications to the Rules Reference and FAQs
Other / Previous TI4e Games on PA: Game I
, Game II
, Game III
, Game IV
There are a lot of rules to read through, and the summary I am putting into these opening posts will not be entirely comprehensive. I recommend reading through the Learn To Play rulebook linked above for starters. You might also want to look at other or previous games played on the forum for an idea of the flow of the game.
In general, actions will be noted in bold dodgerblue
, bold limegreen
, and bold red
: see the sections below for specific formatting. Alternatively, players may post actions in bold using their race's color. Except for conversations initiated by the host, all player conversation must be done in-thread. If you have need for clarifications, feel free to ask in bold darkorange
In order to claim the Imperial Throne of Mecatol Rex, players must accumulate 10 victory points (VP). As soon as any player has completed 10 VP worth of Objectives, the game ends immediately, even if another player could have gained more VP later in the round. VP are generally earned by fulfilling Objective cards, which include two types: Public and Secret.
Races and Special Abilities
The Public Objective line is comprised of 5 Stage I cards and 5 Stage II cards. Two Stage I objectives are publicly revealed at the start of the game, and one Public Objective is revealed towards the end of each round. If there are no more Objective cards to reveal when one would be revealed, the game ends instead and the player with the most victory points wins. In case of a tie, the player who has the earliest (lowest) initiative value wins.
Each player has a hand of Secret Objective cards, drawing one at the start of the game. Secret Objectives may only be fulfilled by the holding player. A player can have at most three Secret Objectives, and must return an unfulfilled Secret Objective to the deck if they draw a fourth.
A total of seventeen races are available for play, of which six were randomly drawn and drafted.
The Ghosts of Creuss
- Home System: Creuss (4R, 2I)
The L1z1x Mindnet
- Starting Units: 1 Carrier, 2 Destroyers, 2 Fighters, 4 Infantry, 1 Space Dock
- Flagship: Hil Colish: Combat Value 5, Movement 1, Carry Capacity 3. Sustain Damage. This ship's system contains a Delta wormhole. During movement, this ship may move before or after your other ships.
- Starting Technology: Gravity Drive
- Racial Technology: Dimensional Splicer (Red, requires 1 Red): At the start of Space Combat in a system that contains a wormhole and 1 or more of your ships, you may produce 1 hit and assign it to 1 of your opponent's ships.
- Racial Technology: Wormhole Generator (Blue, requires 2 Blue): At the start of the Status Phase, place or move a Creuss wormhole token into either a system that contains a planet you control or a non-home system that does not contain another player's ships.
- Commodities: 4
- Quantum Entanglement: You treat all systems that contain either an Alpha or Beta wormhole as adjacent to each other. Game effects cannot prevent you from using this ability.
- Slipstream: During your Tactical Actions, apply +1 to the movement value of each of your ships that starts its movement in your home system or in a system that contains either an Alpha or Beta wormhole.
- Creuss Gate: When the board is created, the Creuss Gate is placed where your home system would normally be placed. The Creuss Gate system is not a home system; your home system is placed in your play area.
- Racial Promissory Note: Creuss IFF: At the start of your turn during the Action Phase: Place or move a Creuss wormhole token into either a system that contains a planet you control or a non-home system that does not contain another player's ships. Then, return this card to the Creuss player.
- Home System: [0.0.0] (5R, 0I)
The Barony of Letnev
- Starting Units: 1 Dreadnought, 1 Carrier, 3 Fighters, 5 Infantry, 1 Space Dock, 1 PDS
- Racial Unit: Super-Dreadnought (Dreadnought): As Dreadnought, but Carry Capacity 2.
- Flagship: [0.0.1]: Combat Value 5 (x2), Movement 1, Carry Capacity 5. Sustain Damage. During a Space Combat, hist produced by this ship and by your Dreadnoughts in this system must be assigned to non-Fighter ships if able.
- Starting Technologies: Neural Motivator, Plasma Scoring
- Racial Tehcnology: Inheritance Systems (Yellow, requires 2 Yellow): You may exhaust this card and spend 2 resources when you research a technology; ignore all of that technology's prerequisites.
- Racial Technology: Super-Dreadnought II (unit upgrade, requires 2 Blue and 1 Yellow): As Dreadnought, but Combat Value 4, Movement 2, Carry Capacity 2. Sustain Damage, Bombardment 4. This unit cannot be destroyed by "Direct Hit" Action Cards.
- Commodities: 2
- Assimilate: When you gain control of a planet, replace each PDS and Space Dock that is on that planet with a matching unit from your reinforcements.
- Harrow: After each round of Ground Combat, your ships in the active system may use their Bombardment abilities against your opponent's ground forces on the planet.
- Racial Promissory Note: Cybernetic Enhancements: At the start of your turn: Remove 1 token from the L1x1x player's Strategy pool and return it to his reinforcements. Then, place 1 command token from your reinforcements in your Strategy pool. Then, return this card to the L1z1x player.
- Home System: Arc Prime (4R, 0I), Wren Terra (2R, 1I)
The Embers of Muaat
- Starting Units: 1 Dreadnought, 1 Carrier, 1 Destroyer, 1 Fighter, 3 Infantry, 1 Space Dock
- Flagship: Arc Secundus: Combat Value 5 (x2), Movement 1, Carry Capacity 3. Sustain Damage, Bombardment 5 (x3). Other players' units in this system lose Planetary Shield. At the start of each space combat round, repair this ship.
- Starting Technologies: Antimass Deflectors, Plasma Scoring
- Racial Technology: L4 Disruptors (Yellow, requires 1 Yellow): During an Invasion, units cannot use Space Cannon against your units.
- Racial Technology: Non-Euclidean Shielding (Red, requires 2 Red): When 1 of your units uses Sustain Damage, cancel 2 hits instead of 1.
- Commodities: 2
- Munitions Reserves: At the start of each round of Space Combat, you may spend 2 Trade Goods; if you do, you may reroll any number of your dice during that combat round.
- Armada: The maximum number of non-Fighter ships you can have in each system is equal to 2 more than the number of tokens in your Fleet pool.
- Racial Promissory Note: War Funding: At the start of a round of Space Combat: The Letnev player loses 2 Trade Goods. During this combat round, reroll any number of your dice. Then, return this card to the Letnev player.
- Home System: Muaat (4R, 1I)
- Starting Units: 1 War Sun, 2 Fighters, 4 Infantry, 1 Space Dock
- Racial Unit: Prototype War Sun (War Sun): As War Sun, but Movement 1.
- Flagship: The Inferno: Combat Value 5 (x2), Movement 1, Carry Capacity 3. Sustain Damage. Action: Spend 1 token from your Strategy pool to place 1 Cruiser in this unit's system.
- Starting Technology: Plasma Scoring
- Racial Technology: Magmus Reactor (Red, requires 2 Red): Your ships may move into supernovas. After 1 or more of your units use Production in a system that either contains a War Sun or is adjacent to a supernova, gain 1 Trade Good.
- Racial Technology: Prototype War Sun II (unit upgrade, requires 3 Red and 1 Yellow): As War Sun, but Cost 10, Movement 3.
- Commodities: 4
- Star Forge: Action: Spend 1 token from your Strategy pool to place either 2 Fighters or 1 Destroyer from your reinforcements in a system that contains 1 or more of your War Suns.
- Gashlai Physiology: Your ships can move through Supernovas.
- Racial Promissory Note: Fires of the Gashlai: Action: Remove 1 token from the Muaat player's Fleet pool and return it to his reinforcements. Then, gain your War Sun upgrade technology card. Then, return this card to the Muaat player.
- Home System: Tren'lak (1R, 0I), Quinarra (3R, 1I)
The Yssaril Tribes
- Starting Units: 2 Carriers, 1 Cruiser, 5 Infantry, 1 Space Dock, 1 PDS
- Racial Unit: Exotrireme (Dreadnought): As Dreadought, but Bombardment 4 (x2).
- Flagship: C'morran N'orr: Combat Value 6 (x2), Movement 1, Carry Capacity 3. Sustain Damage. Apply +1 to the result of each of your other ships' combat rolls in this system.
- Starting Technology: (none)
- Racial Technology: Valkyrie Particle Weave (Red, requires 2 Red): After making combat rolls during a round of Ground Combat, if your opponent produced 1 or more hits, you produce 1 additional hit.
- Racial Technology: Exotrireme II (unit upgrade, requires 2 Blue and 1 Yellow): As Dreadnought, but Movement 2, Bombardment 4 (x2). This unit cannot be destroyed by "Direct Hit" action cards. After a round of Space Combat, you may destroy this unit to destroy up to 2 ships in this system.
- Commodities: 3
- Unrelenting: Apply +1 to the result of each of your units' combat rolls.
- Racial Promissory Note: Tekklar Legion: At the start of an Invasion Combat: Apply +1 to the result of each of your units' combat rolls during this combat. If your opponent is the N'orr player, apply -1 to the result of each of his unit's combat rolls during this combat. Then, return this card to the N'orr player.
- Home System: Retillion (2R, 3I), Shalloq (1R, 2I)
- Starting Units: 2 Carriers, 1 Cruiser, 2 Fighters, 5 Infantry, 1 Space Dock, 1 PDS
- Flagship: Y'sia Y'ssrila: Combat Value 5 (x2), Movement 2, Carry Capacity 3. Sustain Damage. This ship can move through systems that contain other players' ships.
- Starting Technology: Neural Motivator
- Racial Technology: Transparasteel Plating (Green, requires 1 Green): During your turn of the Action Phase, players that have passed cannot play Action Cards.
- Racial Technology: Mageon Implants (Green, requires 3 Green): Action: Exhaust this card to look at another player's hand of Action Cards. Choose 1 of those cards and add it to your hand.
- Commodities: 3
- Stall Tactics: Action: Discard 1 card from your hand.
- Scheming: When you draw 1 or more action cards, draw 1 additional action card. Then, choose and discard 1 action card from your hand.
- Crafty: You an have any number of action cards in your hand. Game effects cannot prevent you from using this ability.
- Racial Promissory Note: Spy Net: At the start of your turn: Look at the Yssaril player's hand of Action Cards. Choose 1 of those cards and add it to your hand. Then, return this card to the Yssaril player.
General Game Flow
At the start of the game, players each receive five system tiles for creation of the game map. Two of these will be empty or special red-bordered systems, while three will be systems that contain at least one planet. Mecatol Rex is set at the center, with home system locations on the third ring directly outward. Starting from the first player and proceeding in a snake draft (first to last, last to first, etc.), each player places a system title from their hand with the following restrictions:
- Each ring must be filled completely before moving on to the next, starting from the center and moving outwards.
- Special systems with red borders may not be placed adjacent to one another unless there is no other option.
- Systems with wormholes of the same type may not be placed adjacent to one another unless there is no other option.
Six races will be randomly dealt for selection at the same time as tiles are given to players (i.e. before map creation). Once the game map has been created, players will perform another snake draft to select race and starting position. Each player may select either a race to play, a start position on their turn, or the Speaker Token (only selectable once); the draft order will be re-randomized for the race and start position draft.
Once all players have a race and start location, the Custodians of Mecatol Rex token is placed on Mecatol Rex (see Odds and Ends) and the Public Objective line is created. Each player receives 2 Secret Objective cards and chooses 1 to keep; the other Objective card is shuffled back into its deck, unrevealed. Players place their starting units, and starting technologies. Players then allocate 3 Command Counters to Tactic pool, 3 counters to Fleet pool, and 2 counters to Strategy pool. The game begins with the first Strategy Phase.
The game is played over a number of rounds, typically 5-9 in total. Each round is divided into four parts: the Strategy Phase, the Action Phase, the Status Phase, and the Agenda Phase. In the Strategy Phase, players select Strategy Cards: this determines the special action that player may take during the round as well as play order. The bulk of activity takes place in the Action Phase: here players may deploy abilities specified by their choice of Strategy Card, activate systems for unit movement, space combat, invasion of planets, and building of new units, or to play certain Action cards. Once everybody has passed their turns in the Action Phase, the Status Phase allows for players to score victory points by claiming objectives and refreshes the board setup for the next round of play. Finally, the Agenda Phase is where players vote on political agendas that will affect the board and gameplay rules. The Agenda Phase is only performed after at least one player has taken control of Mecatol Rex.
In the Strategy Phase, players select Strategy Cards for the round. Each Strategy Card has a special ability and determines play order in the Action Phase. Starting from the player with the speaker token and moving clockwise, each player will choose a card; each card may be selected by at most one player. To select a Strategy Card, note your selection in bold dodgerblue. Example:
I select the (1) Leadership Strategy Card.
At the end of the Strategy Phase, there will be two unselected Strategy Cards. A Trade Good will be added to each card as incentive for selection in future rounds. A player selecting a Strategy Card with Trade Goods on it gains those Trade Goods.
Starting with the player with the lowest-numbered Strategy Card and moving up in number, players take actions sequentially until all players have passed. There are three different types of actions that players can perform: the Strategic Action, Tactical Action, and Component Actions. Details about the first two actions are contained in the following sections. Component actions can be found on various Action cards, Technology cards, and faction abilities: the acting player declares the card they wish to play in bold dodgerblue, noting its effects. Example:
I play an Action Card: Focused Research.
I spend 4 Trade Goods to gain the technology Sarween Tools.
If a player does not wish to or is unable to make any more actions during the round, they may pass their turn. Players must use the Strategic Action specified on their Strategy Card before ending their turn for the round. Players who have passed their turn will still be able to participate in secondary abilities from other players’ Strategic Actions, but take no further actions in the Action Phase. Players may pass their turn in bold red. Example:
I PASS my turn.