Casualties: Unknown is a ruthless cave survival simulator. Your captors have tasked you with recovering lost cargo on an alien planet, exploring its five layers, and doing everything possible to survive a variety of hostile conditions. You are just one of thousands of test subjects sent to their deaths. Humanity had advanced significantly technologically. What had once seemed impossible was now commonplace. At the center of it all was a single company. Their progress seemed miraculous, but they carefully guarded their secrets. Years ago, they had created a new species: a combination of animal and human DNA, which they simply called "Experiments." These Experiments were ideal test subjects, close enough to humans, but with whom they could do whatever they wanted. They labored over them, further altering their biology to suit their needs, and over the years, the population only grew. No one would ever see the outside world. Now it seemed that Earth could no longer restrain their ambitions. Using their newly developed teleportation technology, they set their sights on a gray planet teeming with life. Soon, tons of various cargo and debris were sent. Due to calibration difficulties, as much ended up in the planet's cave system as on the surface, but the project proceeded smoothly. This continued until an unknown error caused a vital piece of technology to be sent deep into the caves. Soon, the scientists devised a plan. A plan that entailed minimal risk to themselves. The chances of success were slim, but they had plenty of live food. You are an unfortunate specimen. Resistance is not an option.

Casualties: Unknown is a ruthless cave survival simulator. Your captors have tasked you with recovering lost cargo on an alien planet, exploring its five layers, and doing everything possible to survive a variety of hostile conditions. You are just one of thousands of test subjects sent to their deaths. Humanity had advanced significantly technologically. What had once seemed impossible was now commonplace. At the center of it all was a single company. Their progress seemed miraculous, but they carefully guarded their secrets. Years ago, they had created a new species: a combination of animal and human DNA, which they simply called "Experiments." These Experiments were ideal test subjects, close enough to humans, but with whom they could do whatever they wanted. They labored over them, further altering their biology to suit their needs, and over the years, the population only grew. No one would ever see the outside world. Now it seemed that Earth could no longer restrain their ambitions. Using their newly developed teleportation technology, they set their sights on a gray planet teeming with life. Soon, tons of various cargo and debris were sent. Due to calibration difficulties, as much ended up in the planet's cave system as on the surface, but the project proceeded smoothly. This continued until an unknown error caused a vital piece of technology to be sent deep into the caves. Soon, the scientists devised a plan. A plan that entailed minimal risk to themselves. The chances of success were slim, but they had plenty of live food. You are an unfortunate specimen. Resistance is not an option.