This is a feature of Programs Extended mod that introduces new mechanic to the game - hostile artificial intelligence. This is a perpetual daemon that installs on first enemy turn of the mission and lasts until mission ends. Unlike all other daemons, AI effects are not fixed, and instead are dependent on what set of subroutines AI has. Operator will have to adapt to different situations, of which there are many - AI could improve firewalls, buff guards, debuff or even attack agents, both proactively or in responce to agency actions. Additionally, Subroutines are not initially known to the operator and require identification, adding element of uncertainity until more information can be revealed.

When creating a new campaign, operator can choose one of the following options under Hostile AI - Starting Difficulty setting:

• DISABLED - hostile AI is disabled and won't appear at all. Default setting.
• OMNI ONLY - hostile AI will only appear in 2 story missions with OMNI.
• (NUMBER) - choosing a number option will make AI start appearing at specified mission difficulty. Available range is 1 to 5.

If a number option was chosen, additional setting will appear, called Hostile AI - Scaling. This setting lets operator choose the upper limit on subroutines AI can have in each mission, ranging from 1 to 15. This limit does not apply to AI in OMNI missions which have a fixed amount of Subroutines. Default limit is shown in the table below.

AI has its own internal difficulty value that determines general power level of the AI:

Mission Difficulty is the number shown at infiltration target summary on the map screen. Starting Difficulty is set with Hostile AI - Starting Difficulty setting. Hard limit of AI Difficulty is 15, with a soft limit specified by Hostile AI - Scaling setting.

AI Difficulty affects following properties:

• Total amount of subroutines AI has, which matches AI Difficulty.
• Available subroutine pool.

Additionally, each corporation has different amount of each type of subroutines (PWR, Proactive, Reactive, Enhancement) within that subroutine limit, specified in table below.

When AI activates, it randomly selects subroutines from the set available to it according to AI Difficulty and corporation subroutine type amounts. For example, an AI with AI Difficulty of 2 in Plastech will have 1 proactive and 1 enhancement subroutine, from available pool of 4 proactive and 4 enhancement subroutines. For details which subroutine is available at which point, see here.

Internationale ready to take Hash Keys from a Console.

Incognita has access to a new resource called Hash Keys. This resource is required to interact with hostile AI in several ways. Mission always starts with no hash keys stored, and a maximum storage of 8. Operator can acquire hash keys in following ways:

• Capturing a Console will grant 1 hash key, provided that hostile AI is present.
• Using ability at a console will provide 1 hash key and reboot that console for amount of turns determined by agent's hacking skill. Using this ability requires at least hacking skill of 2.

• Using ability at a console will provide hash keys based on hacking skill of the agent. This will permanently shut down the console. Requires at least hacking skill of 3.

• Use Decryptor program to gain 4 hash keys for 2 PWR.

Additionally maximum storage of hash keys can be increased by acquiring Decryptor program or any of the Hushpuppy line of programs.

Amount of hash keys can be viewed at any time by any of these:

• Counterintelligence AI daemon tooltip
• Any subroutine tooltip in mainframe view
• In tooltip of any ability that provides hash keys.

Counterintelligence AI installs when enemy turn 1 begins. All proactive subroutines start with 1 cooldown and can't be used during that first turn. However, PWR and reactive subroutines are available, and enhancement subroutines are applied immiedately.

AI has its own reserve of PWR, which can be seen by inspecting AIs daemon icon tooltip on the right side of the screen, or in subroutine tooltips in mainframe view. Amount of PWR it starts with is determined by Starting PWR campaign setting as follows:

This gives AI on Expert 10 PWR, and on Expert+ 15 PWR. Default PWR limit is 20, same as for Incognita's PWR.

AI can generate PWR in following ways:

• By subroutines of the PWR type it has, if any.
• From AI PWR Core mainframe devices added by Worldgen Extended mod. Each device generates 1 PWR per turn.
• Passively generate 1 PWR per turn by itself if AI Difficulty is at least 2 and no AI PWR Cores are present.

AI spends PWR by activating proactive and reactive subroutines it has.

PWR can be removed by the player as well, with following methods:

• By using Drain AI PWR action at the console. This will remove 3 PWR from the AI and reboot the Console for 3 to 5 turns, based on Hacking skill of the agent.
• By using specific Incognita programs.

Subroutines are essencially programs, but only available to AI, and function in exact same way - cost PWR and have cooldown, or operate passively for free. For detailed list of subroutines, look here.

Knowledge is power. Identify those ASAP.

Operator can see subroutines AI has by clicking on the red button next to Access Incognita button, or use a keybind (Z by default, rebindable in options menu). However, there is a catch. All subroutines start unidentified, with their icon being ???. To identify a subroutine, click on it while having at least 1 hash key available. This will spend that key and identify that subroutine permanently. Alternatively, if operator does not have any hash keys, subroutines can be guessed by careful observation of the level.

Each time a subroutine activates, Incognita will warn you about it with a yellow text message. If subroutine in question is identified, operator will receive detailed message about what subroutine it was and what it did. Otherwise message will be a generic warning that may clue you in, by comparing the state of the level before and after the message.

While programs can be roughly categorized as generators, breakers and utilities, subroutines have formal categories that determine several of key properties.

These subroutines are always passive, and operate without any costs. Their only purpose it to generate PWR for the AI. However, most PWR subroutines are conditional, and operator can negate that generation by forcing that condition to become false, most of the time. PWR is generated at start of enemy turn, although there are exceptions.

Operator can spend 1 hash key to add 2 turns of cooldown, temporarily disabling that subroutine, by clicking on the subroutine icon after it's been identified.

As name suggests, AI will use these subroutines proactively, activating them on its own. Proactives always cost PWR and have cooldown, and can't be used if AI does not have PWR required for activation or subroutine is on cooldown.

Because proactives do not have activation condition other than their costs, it would seem hard to predict when they would activate due to randomness. However, there are few rules how AI activates its proactives:

• Always at the end of enemy turn.
• If that proactive subroutine is the only subroutine that requires PWR to run, it will be activated at every possible opportunity.
• If there are at least two subroutines requiring PWR, it rolls a random number between its current PWR and maximum PWR (inclusive), and if result is 15 or more, proactive subroutine is activated. For example, at 4/20 PWR, chance to activate a proactive subroutine is 26%. This is checked for all proactive subroutines individually, so one activation will reduce odds (due to spent PWR) of another proactive activating that turn.

Operator can spend 1 hash key to increase that subroutine's cooldown by 1, by clicking on the subroutine icon after it's been identified.

Reactives will never activate by themselves - instead, they have a condition agency must fulfill first, after which they immiedately activate - for example, hacking a firewall. If several reactive subroutines share a condition, all of them will activate when that condition is fulfilled. Reactives always cost PWR and have cooldown, and can't be used if AI does not have PWR required for activation or subroutine is on cooldown.

Operator can spend 1 hash key to increase that subroutine's cooldown by 1, by clicking on the subroutine icon after it's been identified.

These subroutines are always passive and do not cost anything. Their effects can't be interrupted. Some are similar to reactive subroutines, in that they react to a condition being fulfilled. Others are always active, such as guard buffs.

Unlike other subroutine types, enhancements can be permanently deleted, and their effects cancelled due to said deletion. To delete an enhancement subroutine, Operator has to spend 2 hash keys and 1 PWR by clicking on the subroutine icon after it's been identified, four separate times for a total of 8 hash keys and 4 PWR.