✓ Instant digital delivery via email
✓ Brand-new retail Steam key
✓ Natively supports PC
✓ Multiple language options available
✓ Region: Rest of World (See exceptions below)

About Casualties: Unknown

Drop into a brutal, unforgiving cave-exploration survival simulator where your life means nothing to your captors. As an expendable test subject, your mission is to descend into the treacherous depths of a hostile alien planet and retrieve lost cargo. To survive, you must navigate 11 distinct subterranean layers, each packed with unique environmental hazards, deadly threats, and the lingering mysteries of what actually lies at the bottom.

Staying alive in this underground hellscape requires serious grit. The game features a punishing, fully simulated cardiovascular and limb damage system where every injury matters. You will have to frantically bandage wounds, fight off brutal infections, and manage severe blood loss before you lose consciousness. Even your psychological state is heavily simulated—succumb to the doom and gloom of the caves, and your run will quickly spiral out of control.

Fortunately, you aren't completely helpless in the dark. By scavenging native flora and looting the remains of past expeditions, you can leverage a robust crafting system to patch yourself up and build essential tools. Offering three distinct characters with unique playstyles, over 300 discoverable items, and fully adjustable difficulty sliders to tailor the danger, this intense subterranean adventure will push your intelligence, strength, and resilience to the absolute limit.

Release date: 9 November 2026
Genre: Action, adventure, simulation, survival
Sub-genre: Roguelike

Activation Instructions

1. Download and install Steam from your web browser
2. Open Steam
3. Sign into your Steam account
4. Click the “Games” menu at the top-left corner
5. Select “Activate a Product on Steam…”
6. Enter your product key
7. Follow the prompts to complete activation

Publisher & IP Information

Developed by Orsoniks and published by Oro Interactive.

FlukeFortune operates solely as an independent third-party reseller. We claim no official affiliation, sponsorship, endorsement, or partnership with any respective publishers or their affiliated entities.

All trademarks, logos, brand names, and product imagery are the property of their respective owners. All company, product, and service names used on this website are for identification purposes only.

Shop with Confidence

FlukeFortune is an independent UK-based retailer specialising in brand-new digital game keys intended for legitimate retail activation. Each product is supplied for activation on the specified platform and delivered digitally by email.

Notes

Supported languages: EN, ZH

Region exceptions: Can be activated in EG, DZ, AO, BJ, BW, BF, BI, CM, CV, CF, TD, KM, CG, CD, CI, DJ, GQ, ER, ET, GA, GM, GH, GN, GW, KE, LS, LR, LY, MG, MW, ML, MR, MU, MA, MZ, NA, NE, NG, RW, ST, SN, SC, SL, SO, SZ, TZ, TG, TN, UG, EH, ZM, SD, ZW, SH, YT, AF, BH, BN, KH, TL, IR, IQ, IL, JP, JO, LA, LB, MV, MN, MM, KP, OM, KR, SY, YE, CC, PS, AL, AD, AT, BE, BA, BG, HR, CY, CZ, DK, EE, FI, DE, GR, HU, IS, IE, IT, XK, LV, LI, LT, LU, MK, MT, MC, ME, NL, NO, PL, PT, RO, SM, RS, SK, SI, FR, ES, SE, CH, GB, GG, GI, IM, JE, SJ, VA, CA, US, MX, AG, AI, AW, BB, BM, BQ, VG, KY, CU, CW, DM, DO, GL, GD, GP, HT, JM, MQ, MS, UM, PR, BQ, BL, KN, LC, MF, PM, VC, BQ, SX, TT, TC, VI, FK, GF, GS, BV, UM, AN, AU, FJ, NZ, FO, KI, MH, NR, PW, PG, WS, SB, TO, TV, VU, AS, CK, CX, GU, HM, MP, NC, NU, PF, PN, TK, WF, NF, AQ, TF