The following is directly from Decipher's glossary.
Borg - The Borg, introduced in the Star Trek: First Contact expansion in 1997, represent the first playable affiliation added to the game since its premiere in 1994. And they are, to use Q's words, not like anything you've over seen...
Borg Personnel - Most Borg Personnel cards represent drones. A dron'es lore lists its "Identification" (which identifies it as a particular type of drone), a description of its "Task" and its "Biological Distinctiveness" (species of origin; however, the species of Borg drones ir irrelevant to the Borg). Borg drones list no gender; gender is irrelevant to the Borg. The Borg Queen and Locutus of Borg are not drones.
Borg personnel have no classifications, though several of the personnel types appear as skills. Needed skills, including personnel types, which do not appear on Borg Personnel cards may be obtained by assimilation of opposing personnel or by using the Borg Queen's selectible skill. Regular skills (including the Borg Queen's selected skill) may be shared throughout a Borg hive using the Interlink Drone's skill. Your Borg may also share CUNNING using the Unity Drone's skill. [See Borg Drone page.]
Borg special skills provide many functions supplied by Equipment cards for other affiliations (ex: STRENGTH enhancement for personnel, RANGE and SHIELDS enhancement for ships). They may also use equipment cards, subject to certain limitations.
Each Borg drone has an icon identifying which subcommand it is assinged to within the Borg collective. Subcommand icons are used primarily to staff Borg ships, but also have other uses indicated by cards.
Borg Affiliation Ships - Borg ship SHIELDS do not block transporter beams (except during ship battle). Thus, your opponent may normally use his own transporters to beam his personnel and equipment to and from your Borg ship (or outpost) at the same location. You may use your Borg ship transporters to beam aboard your opponent's non-Borg ship or facility through its SHIELDS if you have a Transport Drone (Two of Eleven) aboard your ship (and if your current objective or another card or rule allows it). Locutus of Borg and the Borg Queen [and other counterparts] each have all three subcommand icons; however, they may each meet only one ship staffing requirement at a time.
All Borg ships have a bonus point box. These bonus points are earned by your non-Borg opponent whenever he destroys your Borg ship in battle (and only in battle).
Borg-affiliation ships are not affected by Plasma Fire, Warp Core Breach, Isabella, Into The Breach, Hugh, or the second function of Anti-Matter Spread. (They are affected normally by the first function of Anti-Matter Spread, like any other ship.) These cards refer to the Borg Ship dilemma, not to any Borg affiliated ship.
The Delta Quadrant and Borg Outpost - All Borg cards (except Locutus of Borg [and other counterparts]) have a D icon and match the Delta Quadrant. Thus, they follow normal matching quadrant rules for seeding facilities and reporting cards. Because no missions existed yet for the Delta Quadrant at the release of First Contact, the following interim rules apply to using the Borg Outpost:
When you play (or activate) a Borg Objective card, you must immediately target an appropriate location, ship, or personnel as specified by the objective. Objectives may target solved or unsolved mission loacations. The objective then allows your Borg present to scout the ship or location, initiate battle, abduct a target, etc.
Your Borg must complete scouting (if required) and meet any other listed requirements (such as having Borg present at the location) before you may probe to determine your current objective's outcome (and score its points, if any).
Your Borg may not form Away Teams (either on a planet or on an opponent's ship or facility) except when counter-attacking or when allowed by your current objective or another card (ex: Emergency Transporter Armbands, Near-Warp Transport, Iconian Gateway, Devidian Door).
Battle - Your Borg may not initiate battle except when counter-attacking or when allowed by your current objective (ex: Assimilate Counterpart, Eliminate Starship) or another card (ex: Condundrum, The Issue Is Patriotism). They may attack other Borg, subject to these restrictions.
Each of your ships, facilities, or Away Teams that wishes to initiate an attack must have a (Red icon) personnel (or a "leader") present, except when counter-attacking.
Your Borg may abduct and/or assimilate opposing personnel during personal combat using cards such as Assimilate Counterpart, the Talon Drone (Three of Nineteen) and Assimilation Tubules.
Cards such as Rogue Borg Mercenaries, Crosis, Outpost Raid, and the Borg Ship dilemma are considered "rogue" and are not part of your collective. Thus, they affect your Borg cards normally.
Borg Cube and Queen's Borg Cube - These ships are intended to allow reporting of Borg personnel and Borg Use Only equipment aboard. Other equipment must be reported at a Borg Outpost, played with Devidian Door, etc.
Borg Outpost - The only way to play a Transwarp Network Gateway at the Delta Quadrant outpost is by using its special download icon, since the Borg Outpost is not a "spaceline" location (which is required for normal play of the Gateway).
Borg Queen - The skill that the Borg Queen selects must be a regular skill, and may be shared through the Interlink Drone like any other regular skill in the hive. The Borg Queen's enigma icon * indicates that she is neither universal nor unique, and thus is not affected by cards that specifically affect either universal or unique personnel. However, each player may have only one Borg Queen in play at any time.
Borg Servo - The personnel assimilated by this dilemma remains on the ship or planet where he was assimilated, until the Borg player can beam him to his Borg ship. Like all Borg, the newly assimilated drone must obey normal attack and movement requirements. Thus, he cannot normally attack unless attacked first or allowed by a current objective. If on a ship, he may be used by the Borg player to scout the ship for Assimilated Starship on his turn, if that is his current objective.
abduction - Cards such as Assimilate Counterpart and the Talon Drone (Three of Nineteen) allow your Borg to abduct a personnel during personal combat. When this happens, both combatants cease to participate in the battle and may immediately beam away (if possible), but are still "stopped."
The abducted personnel is considered to be escorted by your Borg present. On later turns you may move it around (like equipment). If the abducted personnel is ever unescorted, your opponent can rescue them with his own personnel present.
Abducted personnel are always disabled, and do not participate in battles. They are not considred captives and thus may not be rescued by the Rescue Captives card. An abducted personnel who becomes assimilated is no longer considered abducted.
assimilation - You may assimilate planets or your opponent's personnel and ships by using Objective and other cards that allow assimilation. Cards that allow you to assimilate personnel include Talon Drone, Assimilation Tubules, Assimilate Counterpart, and Borg Servo. (Your Borg Cards may not assimilate personnel you have captured unless a card or rule allows you to do so.) Assimilate Planet and Assimilate Homeworld allow you to assimilate planets (along with any facilities that may be located there). Assimilate Starship allows you to assimilate ships.
When personnel, ships, or planets are assimilated, they come under your control and undergo specific transformations.
Personnel assimilation - When you Borg assimilate an opposing personnel, it becomes a Borg drone under your control and it undergoes the following transformations:
In addition to drone assimilation, you may turn a male personnel into a counterpart by completing the Assimilate Counterpart objective. When this occurs, the counterpart undergoes the same transformations as a drone, with the following exceptions:
Your Collective is limited to one counterpart (or personnel targeted as such) at a time. While any personnel is targeted to become a counterpart, that personnel may not be assimilated as a drone and is therefore excluded from all such selections. Dual-personnel cards may not be targeted for assimilation as a counterpart.
Your Borg may assimilate your opponent's Borg personnel. The normal rules for conversion of icons and adjustment of attributes do not apply if the assimilated personnel is already Borg.
Planet assimilation - When you assimilate a planet, it changes to Borg affiliation for purposes of building outposts there.
Facility assimilation - There is currently no way to assimilate a facility except as a side effect of assimilating a planet (all facilities at the location are assimilated). Once assimilated, a facilities SHIELDS no longer prevent beaming (as with Borg ships).
hidden agenda - Cards with a hidden agenda icon represent secret objectives or other clandestine strategies. When you seed or play such a card, you announce it as a hidden agenda card and place it face down on the table without showing it to your opponent (this counts as your turn during that seed phase, or as your normal card play, as appropriate). While face down, its identity is concealed and thus it is immune to general-use cards (ex: Kevin Uxbridge).
You may activate a hidden agenda card by turning it face up at any time, even as a response to another action. (A seeded hidden agenda card may not be activated until after the play phase begins.) This immediately activates the card's game text. If there are any conditions specified by the card, you must meet them at this time (if you cannot, you must immediately turn the card face down again). Once activated, the card remains face up until removed from play.
You may not play a card as a hidden agenda card if it does not bear a hidden agenda icon. If you violate this rule, you forfeit the game.
If a card such as The Line Must Be Drawn Here or Mirror Image is activated in response to the play of one of the cards affected by it, it takes effect immediately in reference to that card play. For example, if you activate The Line Must Be Drawn Here in response to your opponent playing Kevin Uxbridge, he loses 5 points for playing that card.
A Hidden Agenda card may not automatically be seeded. Only those Hidden Agenda cards which say that they are seedable may be seeded.
probing - Probing is a feature of some Objective cards (and a few other cards) which uses card icons to determind a randomzied outcome. When a card requires or allows you to probe, you do so at the end of your turn (just before your card draw) by revealing and examining the top card of your draw deck, called the probe card. (If your draw deck is empty, you may not probe.)
Some probe outcomes "complete" the objective (e.g., the last outcome on Navigate Plasma Storms) - these outcomes tell you to discard the objective or relocate it as a marker. Other outcomes simply have an effect and allow the objective to remain in play (e.g., both of the outcomes on Promenade Shops). You may continue probing on successive turns until the objective is nullified, discarded or completed.
If two or more cards allow or require you to probe, announce all of them at once and reveal only one probe card (using it to resolve the probes in any order you wish). However, cards which instruct you to "immediately probe" are resolved individually, without waiting for the end of your turn.
scouting - Scouting normally begins with an Away Team consisting of a single scout. However, if you have mutliple unstopped Borg on a planet by any legal means, they may be used together to scout the planet if it is targeted by a current objective, even if you have not previously begun scouting with a single Borg. The same rule applies to scouting a ship, if you have one or more Borg aboard a ship from Undetected Beam-In, left over from a counter-attack, etc.
scouting locations - An Objective card may direct your Borg to scout a planet or space location. Scouting conceptually represents overcoming resistance (encountering dilemmas and Q-Flashes) and gathering data.
Borg encounter and resolve dilemmas and Q-Flashes in the same way that non-Borg do during mission attempts, subject to a few additional rules:
Scouting Planets - Begin scouting a planet by beaming down a single scout (any Borg personnel) to encounter dilemmas and Q-Flashes. (If an artifact is encountered, move it to the back of the stack as usual.) If that scout is unable to continue, you may beam down another scout to pick up where the last one left off, and so on. On your next turn, you may beam down another scout, and so on. As a result of being "stopped," scouts may accumulated on the planet (on your next turn, they may resume scouting separately or together, assist a newly arriving scout, etc.). Like other personnel, Borg already on a planet may form or split up Away Teams and may beam separately or together.
If your opponent attacks your scout(s) during his turn, you may counter-attack during your next turn with any number of Borg. Those Borg are free to remain on the planet and continue scouting on your next turn.
Scouting Space Locations - Begin scouting a space location by selecting one of your Borg crews to encounter dilemmas and Q-Flashes there. If that crew is unable to continue, you may select another crew to pick up where they left off.
Scouting Dual-Icon Locations - A dual-icon mission may be targeted by an objective either as a space location or as a planet, or even as both by successive objectives (space first, then planet). The Borg do not need both a crew and an Away Team to scout a dual-icon mission. Scouting porceeds as usual for the type of location that is targeted, using a crew on a ship to scout the space location (encountering only space and space/planet dilemmas, and Q-Flashes), or beaming down single scouts to scout the planet (encountering only planet and space/planet dilemmas, and Q-Flashes). Move inapplicable dilemmas to the back of the see stack.
Like mission attempts, a scouting attempt is one action that may not be interrupted (except by playing Doorway or Interrupt cards between dilemmas), and may not be aborted unless the entire Away Team or crew is "stopped" or removed from the location.
Scouting a planet or space location is complete at the end of your turn if you have scouted it at least once, and no dilemmas or Q-Flashes remain to be encountered. Your Borg must complete scouting before you may probe to determine your current objective's outcome. Also, you may not probe
When Borg are scouting a location, any artifacts encountered there are "moved to the back" normally. The Borg must complete an ojbective targeting that location before the Survey Drone can acquire the artifact(s). (Picard's Artificial Heart is acquired by its owner upon completion of scouting.) (At a dual-icon mission, space-permissible artifacts may be acquired upon completion of a space objective. Any planet artifacts may be acquired only after completion of Assimilate Planet.)
When an objective calls for scouting a mission location, you must scout even if there are no dilemmas remaining when you began (because none were seeded, or your opponent cleared them during a mission attempt.) In other words, you must bring one scout to a planet mission, or bring a ship and crew to a space mission, and announce that you are scouting that location. At the end of that turn, scouting is complete.
When an objective requires you to target a space mission "if not yet scouted," it must be a mission which neither you nor your Borg opponent has completed scouting. The absence of dilemmas for other reasons (such as a non-Borg opponent attempting the mission) does not mean the mission has been scouted. If your opponent completes scouting a mission after you have targeted it, it does not discard your objective.
scouting ships - An Objective card may direct your Borg to scout a ship. As with scouting a location, scouting a ship conceptually represents overcoming resistance and gathering data.
Begin scouting an enemy ship by beaming over a single scout. If that scout is somehow "stopped," killed, disabled, lost, etc. before the end of your turn, you may beam over a replacement. On your next turn you may beam over another scout, and so on. Note that you will need the Transport Drone, Two of Eleven, to beam through your opponent's SHIELDS (unless your opponent is also playing Borg).
If your opponent attacks your scout(s) during his turn, you may counter-attack during your next turn with any number of Borg. Those Borg are free to remain on the enemy ship and continue scouting on your next turn.
Scouting an enemy ship is complete at the end of your turn if you have Borg aboard that ship. As when scouting a location, your Borg must complete scouting before you may probe, no earlier than your next turn, to determine your current objective's outcome. You may not probe if your Borg participated in any battles at the location of the targeted ship during your current turn or during your opponent's previous tern.
Related Links
Star Trek CCG Page (menu)
First Contact Page