Configuring AI on The Isle Evrima Server

AI dinosaurs are a core part of Evrima gameplay. Here is how to configure AI spawning, density, and which species appear on your server.

Enabling and Disabling AI

To turn AI on or off entirely, edit Game.ini:

[/script/theisle.tigamesession]
bSpawnAI=true

Set to false to disable all AI spawning. Useful for PvP-only or event servers. Requires a restart.

You can also toggle AI live via RCON without restarting:

toggleai

AI Density

AIDensity is a multiplier that controls how many groups of AI spawn around players. This is the single biggest lever for AI performance impact.

[/script/theisle.tigamesession]
AIDensity=1

Change live via RCON (no restart needed):

aidensity 0.5

AI Spawn Interval

Controls how frequently (in seconds) the server checks whether to spawn more AI:

[/script/theisle.tigamesession]
AISpawnInterval=40

• Lower = more frequent checks = more responsive AI population replenishment
• Higher = less frequent = better performance, AI may feel sparse after kills
• Default is 40 seconds — range of 30–120 is typical

Disabling Specific AI Classes

You can disable individual AI species without turning off AI entirely. Add one line per species you want to remove under [/script/theisle.tigamestatebase]:

[/script/theisle.tigamestatebase]
DisallowedAIClasses=Compsognathus
DisallowedAIClasses=Pterodactylus
DisallowedAIClasses=Boar
DisallowedAIClasses=Deer
DisallowedAIClasses=Goat
DisallowedAIClasses=Seaturtle

Available AI classes to disable:

Remove lines for any species you want to keep. If the section is absent entirely, all AI classes spawn normally.

You can also manage this live via RCON:

disableaiclasses Compsognathus,Pterodactylus

Migration Zones

Migration zones move herbivore populations around the map over time. Related settings:

[/script/theisle.tigamesession]
bEnableMigration=true
MaxMigrationTime=5400
SpeciesMigrationTime=10800
bEnableMassMigration=true
MassMigrationTime=43200
MassMigrationDisableTime=7200
bEnablePatrolZones=true

Toggle migrations live via RCON without restarting:

togglemigrations

For the full settings reference, see the Server Configuration Guide.

Performance Tips for AI

If your server is struggling under AI load:

1. Reduce AIDensity to 0.5 — biggest single improvement
2. Increase AISpawnInterval to 60 or 90
3. Disable unused AI classes — removing flying and aquatic AI helps on inland servers
4. Use wipecorpses via RCON — corpses persist and consume memory; wiping them periodically helps
5. Disable mass migrations if you don't need them: bEnableMassMigration=false

See the Server Requirements guide for RAM and CPU recommendations by player count.