Rimworld’s Anomaly DLC has you managing and containing unnatural entities.

They function quite differently from humanoid prisoners or penned animals and the cost for mistakes can be significantly higher.

A normal prison break ends when the captives escape to freedom.

A progression of different containment cells used in Rimworld Anomaly. A pawn hauls a nociosphere into containment on the completed room

An escape in Anomaly can mean researchers getting eaten alive before the guards arrive.

Here’s everything it’s crucial that you know about thronerooms in Rimworld!

How To Build Containment Facilities

Each entity you encounter in the game will havea minimum containment strength.

Title screen for Rimworld’s Royalty DLC

You ideally want to be well above this amount to minimise how often they give a shot to escape.

There are both universal and specific factors to containment strength.

Building Material

The biggest factors in containment strength are the building materials you use.

A bioferrite farm in Rimworld, with sightstealers, shamblers and a toughspike being harvested

These are tracked separately for your holding spot, walls, and door.

Other factors have some secondary relevance:

Layered walls have no impact on containment but can still be useful.

A plasteel cell can be given asecond layer of stone bricks for fireproofing.

A high security cell, with plasteel walls and banks of electric inhibitors

Doors follow the same rule as walls,examining the HP of the material used.

You want to have only one door to these cells.

The newly added Security Door is the best choice for this but needs plasteel and electricity.

A rimworld prison contains fleshbeast anomalies by keeping the temperature below freezing

Holding platforms are your second consideration.

The free-to-build holding spot can be used in a pinch but thesteel holding platform give 40 pointsof containment.

A wooden shack with a steel holding plate can be cheaper than a steel building and basic holding spots.

A freezer filled with slain entities from Rimworld’s Anomaly DLC

How Many Entities To Store Per Room

Space is a limited commodity when building bases in Rimworld.

Unfortunately, each holding spot in a room weakens the containment of the others.

Thisapplies even if the spots are empty, so only build spots when you need them.

Four captive entities share a cell in Rimword. The walls are stone and the floor is bioferrite.

You also want to store your captives close together to benefit from the shard inhibitor upgrade.

Upgrades like the bioferrite harvester and electroharvester draw from amaximum of four platforms.

This is a good upper limit for entities that don’t warrant a personal cell.

A group of sightstealers fails to escape from containment and are gunned down by waiting pawns

Aim instead tobuild well above each threshold.

Replace holding spots withsteel platforms and rebuild the walls from stone.

Bioferrite floor platingandshard inhibitors.Move problematic entities to personal cells.

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Before this happens,send it to exhaust itself killing mechanoids.

The Nociosphere can defeat an Apocriton-level raid.Any less and it’ll turn on you afterwards.

Handling Escape Attempts

Escape attempts work similarly to humanoid prisonbreaks with two major exceptions.

Rimworld

A human cansteal the keys to open doors, allowing them to walk out quickly.

They can’t pick up weapons but have full access to their natural abilities.

In large prisons, this can quickly cascade.

You’ll want to run back andfight away from the dooror else other entities will attempt to escape.

it’s possible for you to temporarily uninstall their holding spots to improve security on the remainder.

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