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Casualties: Unknown

New releaseReleased 9 November 2026$19.54 on Steam, 15% off its usual $22.99

Players recommending the game

97%Overwhelmingly Positive

of all 3,188 reviews on Steam, keys included

Bought on Steam 2,909 · 97%Keys 279 · 98%

Steam’s store page counts only copies bought on Steam, so it shows 2,909 reviews and 97%.

97%about the same

recommend the game, last 7 days

3,089First week

new reviews, last 7 days
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Review Map Mapped 14 November

The latest reviewsReview Explorer members read any stretch of the game’s life.

What players talk about in the latest 200 reviews

Mentioned most

Worth the money

The longest bar below
Close behind

Hard to put down and Music and sound

Nearly as often as Worth the money
Complaint raised most

Poor tutorial

About a third as often as Worth the money

ClickTap a theme to read real reviews that say it

Praise

Complaints

Bars compare each theme with the one mentioned most. We don’t print counts: 200 recent reviews are a sample, not a measure of the game.

New Steam reviews each day

The last 7 days against the 7 before. Point atTap a day for its counts. Steam’s daily chart counts only copies bought on Steam.

Recommended, last 7 days2,770Not recommended, last 7 days76Recommend the game, last 7 days97%

New Steam reviews each day
DayRecommendedNot recommendedRecommending the game
31 October, 7 days before00too few
1 November, 7 days before00too few
2 November, 7 days before00too few
3 November, 7 days before00too few
4 November, 7 days before00too few
5 November, 7 days before00too few
6 November, 7 days before00too few
7 November, last 7 days00too few
8 November, last 7 days00too few
9 November, last 7 days7941998%
10 November, last 7 days7162497%
11 November, last 7 days5461697%
12 November, last 7 days378798%
13 November, last 7 days3361097%

Most helpful reviews, 7 to 13 November

Steam’s top-ranked review for and against the game in these 7 days, in English. Votes as they stood when this map was made.

Most helpful, recommending the game

Y'all know how pet hamsters die in the most stupidest/obscure ways possible, with no explanation at all? Welp, this is the game, except YOU are that hamster.

RecommendedPosted 9 Nov669 found it helpful264 found it funny
3 hours at review30 hours in total when mapped

Most helpful, against the game

Layers from six onward feel like a "speedrun as fast as possible" sorta thing. Was pretty dissapointed there wasn't much to do in them outside of trying to get through there as fast as possible before dehydration or tempature kills you. Lack of glowfruit in later layers also just makes it feel like all the shiny stuff you could in theroy have late-game is just sort of.. unobtaniable unless you've been lugging around a LOT of glowfruit liquid for the sudden disappearance of them. Edit: I have been informed on the cas:unknown discord you can use lumage to make biochem fluid, which aliviates the crafting issue. 6 - Very barren, the only thing you could really do here is collect titanium ore but that's a REALLY bad idea to spend any extended peroid of time in the cold. Zero reason to linger, no interesting structures, no real way to deal with cold outside of spamming campfires or running between hot places (which I know is the intent, but the hot places could've at least had something interesting at them instead of being some heater in the middle of nowhere. In a ruined structure, or something.) Background just adds to the emptiness, which, in this case is not a good thing. 7 - Mushroom galore Plays mostly like 1-4, but nothing really.. interesting? There's just a bunch of mushrooms everywhere, and an occasional big tick. Didn't -see- titanium ore in my playthrough, but I assume it spawns here so you could spend time doing that. Unless you didn't prepare for glowfruits to suddenly disappear, then, well, you have nothing to do and no reason to mine titanium so.. just move on. 8 - Barren cave with pretty crystals I'll be blunt, this feels like an unfinished level. The threat is entirely optional (you have to specifically activate crystals that tell you what they do) and for a cave filled with glowing crystals, the background is pretty dead and barren. Pretty much no resources here either asides from the crystals themselves, since some randomly turn into items when touched. Honestly your biggest enemy is dehydration here, better to just move through the level as fast as possible. Maybe touch a healing crystal on the way, or gamble a bit with the metamorphic crystals. Just remember to not take too long. Edit: I have found out that you can attack the crystals that spawn hostile crystal entities to eat what they drop if you kill them, feeding both hunger/thirst. Still suffers from being incredibly barren though. 9 - Hell Personally, I liked the vibe of this one. Background is cool, the threats are cool, but it suffers from sharing same-y structure generation from layer 8. I dunno about you, but I don't think there'd be much wood with a lot of magma/lava everywhere, that would burn FAST. I could say "there's no water here" but at least for this one it makes sense. Still, very strict time limit without any water here, so you can't linger long. If it had more unique structure generation for the layer, something akin to a structure with a bit of water in it would go a long way. Also the magma/lava feel like a massive joke to fall into. Sure, your skin/muscles get obliterated fast, but it just.. doesn't feel very threatening, some prepwork here with bruise kits and an ice pack pretty much negates it. The worst thing I've experienced with the lava is not myself falling into it, but hitting my head on the way down and watching in horror as my held item disappeared into it. Whilst I also got entirely submerged, but got out relatively unharmed. 10 - Cargo Vibe fits well enough, barren area with a lot of falling. It's the end of the game, you're supposed to rush as fast as possible to the objective here (although ironically being very careful and slow is the way to go, lest you break your spine and get 1 million bleed wounds falling from far up). Background coulda been a bit cooler, but, still, fits well enough. 11 - UP Not what I expected. You skip 90% of the ascent back to layer 1, except everything is red and there's a ton of resources everywhere. Thematically speaking, it's cool, you get to jump around like you're on a combat stim 24/7. And the abundance of resources is sorely needed, since you are more than likely running on fumes by this point (though the complete lack of puddles is an odd choice, you'd think there would be water. Or, like, bloody water since everything is red) Maaaybe disable sleep while you're hopped up on the energy ball thing? Having to go to sleep kinda breaks the whole "GO GO GO" feel of it Buuut. I was really hoping for having to acend through the layers again, clawing your way back up to victory instead of it basically being put in your lap. Obviously making a whole bunch of new layers that is "you now go up" would take a lot of work, so it's not really a strong gripe of mine because I understand. But still, I am dissapointed by the lack of it. - In all honesty, I hate to say it, but if you want the casualties unknown experience you can just play the demo. Between the demo and the 1.0 version of the game there just isn't enough of a content difference to say "yes, this is worthwhile to play again" if you've played the demo before. As you basically have to skip through all the new layers where there COULD be new content (but there really isn't that much), due to the odd choice to omit basic, very nessary for survival, resources to further push the player to rush. Edit: Comment about basic survival resources weaker now due to finding out more methods of obtaining them (lumage into biofluid, killing hostile crystals for food/water) but there is still no real reason to stick around in the aformenetioned layers.

Not recommendedPosted 10 Nov39 found it helpful
10 hours at review19 hours in total when mapped
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Recommended by playtime

This week’s reviews, split by hours played, and how many recommend the game.

About the same at every stage.

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Steam Deck

Valve’s Steam Deck rating.

Playable

Reviews by language

How many of the game’s reviews are in its main languages, with the rest together, and how many in each recommend the game.

3,188reviews
8 languages · point at one
LanguageReviewsSharePlayers recommending the gameThe line marks all languages together, 97%. The chip shows how far each language is above or below it.
English1,96262%
98%+1
Russian61619%
96%−1
Simplified Chinese2468%
96%−1
Spanish612%
100%+3
Korean522%
98%+1
Polish401%
98%+1
Portuguese - Brazil391%
100%+3
French23<1%
100%+3
Other languages1495%

All reviews ever, as Steam counts them. Each language named has its own Steam score; Other languages holds every other language together.