Enhanced AI is a mod that changes the mobs AI, trying to make them deadlier.

The mod requires InsaneLib

The mod is configured to be a spice up for vanilla, setting the chances to 100% will add a true hell experience.


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These are the current features (outdated):

All mobs

Mobs will instantly target the player instead of having a chance every tick.
Try to avoid explosions
Can see the player from 24~48 blocks away or 12~24 even without line of sight (xray)
Can swim 2.5x faster.
Monsters can no longer be trapped in boats / minecarts
Monsters can target ladder to climb them

Humanoids

(Disabled by default, WIP) Able to use shields

Animal

Attack back the player (with high knockback) and no longer flee

Blaze

Can shoot faster, more fireballs and more accurate

Creeper

10% chance to spawn with the Walking Fuse property. This property makes them walk while exploding instead of standing still
10% chance to spawn with the Ignore Walls property. This property makes them explode even if there's a wall between the player and the creeper
7.5% chance to spawn with the Breach property. Creepers will try to create an hole in the wall to let other mobs in
5% chance to spawn with the ability to Launch (they emit cloud particles when they can Launch). When in range to the player (based off the explosion power) will ignite and throw themselves to the player. At lower world difficulty the launch is less accurate and can miss the player.
If the creeper's both Breaching and Launching they will launch and try to breach walls, exploding on contact with them or if in range of the player.
2% chance to spawn as a Creeper Cena (bigger explosion)

Drowned

Swimming speed is now given by the forge:swim_speed attribute instead of minecraft:generic.movement_speed, so they swim faster

Enderman

(disabled by default, WIP) Teleports the player if can't reach him

Ghast

Can shoot up to 3 fireballs and have 30% chance to be able to shoot the target even if can't see him, and will shoot much faster to breach

Skeleton

Are now able to shot the player from up to 32 blocks, are much more precise and have 50% chance to be able to run away from players that get too close. When able to flee, they have another 50% chance to shot the player while running away.
33.3% chance to gain the strafing ability (by default they no longer strafe)
7% chance to spawn as a Spammer. Instead of firing arrows normally they will shoot really fast without charging the bow too much.

Spider

10% chance to spawn as a Web Thrower. Spiders will throw webs at the player stackingly slowing him down, or place a Cobweb if missed.
Cave Spiders also poison the entity hit.
They take -90% damage from falls.

Witch

Witches throw more potions, faster and farther.
    No longer chase player if they can't see him.
    15% chance for potions to be lingering instead of splash.
    25% chance to throw a potion back to back.
    Throw slow falling potions at their feet when falling for more than 8 blocks
    Throw invisibility potions on themselves and run in a random direction if low health
Witches now drink more potions and milk if they have negative effects
33% chance to be able to perform Dark Arts: summons and electrocutes a Villager to spawn a new Witch. During the summoning phase the Witch has 80% damage reduction.
Now flee from players

Villagers

Villagers attack back players if have low reputation.

Zombie

7% chance to spawn as a Mining Zombie. Let zombie break blocks to reach the player. They also get equipped with a Wooden Pickaxe. Can't mine above the sea level by default.
Can now use Ender Pearls to reach the target and have 4% chance to spawn with 2 Ender Pearls.
Can now use Fishing rods to "fish" the target and have 7% chance to spawn with a Fishing Rod.
(planned) Chance to spawn as a builder. Let zombies place blocks to reach the player

Everything's highly configurable.

Most mobs data (e.g. if a zombie is a miner or the inaccuracy of a skeleton) are loaded from NBT in ForgeData (if not present will use default values from config).
You can find all the Tags here: https://github.com/Insane96/EnhancedAI/wiki/Entity-Tags

Videos:

Enhanced AI

2.4.2

2.0.5

1.8.5

1.6.10