Casualties Unknown layers

The developer said all main layers were complete and playable in September 2026, and the launch post lists layers 6 to 11 as new in the full game. confirmed Below layer 5, details will change as players document the release, so this page marks what is still unconfirmed.

How many layers are in Casualties Unknown?

Eleven in total. The store page says “11 layers of an alien planet”, and the September update breaks that down as 10 main layers plus a shorter 11th, with an optional bonus ending sequence after that. confirmed The Steam demo includes the first 5. confirmed

The depth meter on the right edge of the screen shows how far you have gone. Official screenshots show readings such as 435 m, 934 m and 1,406 m at different points. confirmed

What is in each of the first five layers?

These details come from an in-depth guide recorded on the demo. confirmed

#	Layer	Main dangers	What to take from it
1	Gravel Lands	Jump pads, spike traps, geysers, glass shards, shade crawlers	Foliage, water, plastic from your pod
2	Deeper Gravel Lands	Bear traps, barbed fences, cave tick swarms	Scrap from destroyed traps
3	Dried Desert	Landmines in bushes, turrets, coils, stalactites, waste pipes, sand stalkers	Lots of foliage from dried bushes
4	Wasteland	Toxirock, spent fuel, sound cannons, plus turrets and mines	Carry water, because it is scarce
5	Overgrown Depths	Skullcrushers, grabber plants, ticks, thornbacks, elder thornback	Food, but combat becomes the main threat

Ilmenite only spawns from layer 5 onward, per the 7.0 notes. confirmed Full details on each hazard are in enemies and traps.

What is below layer 5?

Six more layers are in the full game. confirmed Beyond that, here is what is reported before release. Spoilers follow.

• An ice layer, referred to in a guide on cold survival. reported
• A fungal area and crystal area, named on community sites and in teasers. Their exact order and names are not official. unverified

We will replace this list with confirmed names as recordings of the full game appear. The update log will say when.

The developer said later layers were adjusted so that they are not too brutal, “since losing multiple hours of progress isn’t very fun”. confirmed

What is the radiation line?

A rising band of radiation is why you cannot stay on a layer forever. One player calls it “an employee motivator”: if the line passes you, you will be cooked alive. confirmed It enforces a time limit per layer, and you can adjust it in the run settings. A player on the forum warns against over-preparing so much that you run close to the limit. reported

How do drill pods work?

Drill pods are machines scattered around the world. The developer added more of them for the full game and made them easier to use, specifically because runs can get long. confirmed You repair and use one to dig through terrain.

They are also a salvage target. Breaking a drill pod drops a large amount of 100% condition scrap and circuit boards, and one guide suggests a digging tool plus sped-up time as the fastest way to do it. confirmed Circuit boards are valuable to traders.

How do you move between Casualties Unknown layers?

You reach the bottom of a layer and choose whether to continue or to save and quit. Saving between layers is the game’s main save system, and forum players do not expect mid-layer saves to be added. reported Items carry over when you save, even if you are unconscious at the time, since the 6.0 fix. confirmed Dying on an earlier layer does not reset your deepest achieved layer. confirmed

How should you prepare for each layer?

• Before layer 3: have water and a way to carry it. Players recommend bringing enough for layers 3 and 4, and turning fruit into juice on the way. reported
• Before layer 4: know how to read radiation, since the wasteland is built around it. See infection and radiation.
• Before layer 5: have a good weapon. reported The weapons and armor page covers your options.