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Mysteria ~Occult Shadows~

Mysteria ~Occult Shadows~

Explore the land of Sulnas as the "Shadow of Death", a cat girl who's dauntless and fierce. The land is poisoned by secret power and desperately needs salvation. Can you save it from its sure demise or will you doom its fate like everyone else would?

Released Sep 29, 2020 Developer U-Secret Studio Publisher SakuraGame Platforms Windows Sexual ContentActionFemale ProtagonistAnimeNudity
View on Steam ↗ $2.59 (US · as of 2026-09-25)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-02 · quoted reviews as of 2026-05-13.

64.3%positive3,463 reviews
Recommended · 0 found this helpful

“Very cute game ♥ Meow! Meow! ♥ (ʻʻʻ)_(=^･ω･^=)_(ʻʻʻ) ≽^•⩊•^≼ Hi hi? Just buy it on sale ok, Guys and Gals?! ITS LAG AF LMFAO”

— a player, Steam review · 2 hrs played
Recommended · 1 found this helpful

“Absolutely peak. Playing it felt like a dream. The story, the characters, the music, the design, every single piece of art, everything was flawless. Each element came together to form an absolute masterpiece, something to admire from every possible angle. The entire industry…”

— a player, Steam review · 1 hrs played
Not recommended · 3 found this helpful

“It has the Hentai tag in steam, but this is not a hentai game at all, sure there are some lewd outfits for your character and you can turn on a transparent clothing option, but there is no nudity here. The gameplay itself is a bit jank and stiff, you can button mash and still…”

— a player, Steam review · 3 hrs played
Read more reviews ↗

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-19.

39achievements
10.1%median completion
1.6%rarest: Drinking Poison
92.7% of players 88.5% of players 88.3% of players 69.8% of players 65.6% of players 61.5% of players 51.0% of players 41.1% of players 28.3% of players 23.5% of players 23.5% of players 23.5% of players 19.6% of players 18.4% of players 15.7% of players 13.4% of players 12.3% of players 11.7% of players 11.4% of players 10.1% of players 9.4% of players 9.0% of players 8.7% of players 8.1% of players 8.0% of players 7.3% of players 6.8% of players 6.3% of players 4.4% of players 3.7% of players 2.6% of players 2.1% of players 1.9% of players 1.7% of players 1.6% of players 1.6% of players 1.6% of players 1.6% of players 1.6% of players 92.7% 0% most earned rarest
Almost everyone has
92.7%Dream of Mysteria — Welcome to Mysteria！
88.5%Wild Cat — Kill 100 enemies with executions
88.3%Cat's Wildness — First execution of enemies
Rarest badges of honor
1.6%Drinking Poison — Fully strengthen magic power with Psychic Fire
1.6%Artistic Cat — 500 Combos reached
1.6%Handsome Cat — 100 Combos reached

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-11. Steam prices vary by region — always confirm your local price on Steam.

$2.59−80% right nowcurrent · sampled 2026-09-25 21:36 UTC
$12.99base price
$2.59lowest since tracking began2026-08-14
US2.59 USD−80%
EU2.55 EUR−80%
UK2.19 GBP−80%
Australia3.79 AUD−80%
Canada3.39 CAD−80%
Japan300 JPY−80%
Brazil8.39 BRL−80%
China8.60 CNY−80%

Regional prices at last sample, in local currency — Steam sets each region's price independently.

China≈$1.3 Brazil Japan Canada US Australia UK EU≈$2.9

Cheapest → most expensive, converted to USD at ECB reference rates (2026-09-25). Relative comparison only.

$0 $10 $20 07-11 07-25 08-09 08-25 09-10 09-25

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Sep 30, 2025
HD Point Shop Items Now Available! New Game on Autumn Sale at Lowest Price

With the previous experience from creating items for "Mysteria Beast Girls", this time we’ve made even higher-quality Point Shop items for our new title "Rebellion Godsoul" ! ✨ Seamless Loop · Ultra H

Jul 29, 2025
[Important] Beautiful animated avatars and backgrounds are now available

Dear Beastgirl fans: We've quietly added new items to the Steam Points Shop—now you can reunite with those beautiful fantasy scenes once again! If you're interested, feel free to decorate your Steam p

Jun 27, 2025
Click to Get Ultra HD Swimsuit Wallpaper + New Release on Summer Sale!

Dear Mysteria fans, long time no see~ Here's a high-res swimsuit wallpaper of our beast girls! Although we no longer own this IP, we sincerely thank you for your past support. Please accept this wallp

Jun 10, 2024
Our all-out new game is crowdfunding on Kickstarter.

Our new game, Rebellion GODSOUL, is currently crowdfunding on Kickstarter~ This game is the sole intellectual property of our development team (u-secret studio), and we've spent 3 years developing it

Jan 29, 2024
new discord link

https://discord.gg/3mWFr5QAZ6 welcome join our discord~have some cute wallpapers!

Games like Mysteria ~Occult Shadows~

From our knowledge graph — ranked by shared traits, not a black box. Each card says why it's here.

Dark Elf Dark Elf 73.9% · 574 reviews shares Hentai, Mature, JRPG, Nudity UNDEFEATED UNDEFEATED 88.3% · 4,198 reviews shares Hentai, JRPG, Nudity, Third Person Action Taimanin Action Taimanin 80.3% · 3,511 reviews shares Hentai, Mature, Nudity, Hack And Slash Azur Lane Crosswave Azur Lane Crosswave 76.0% · 1,400 reviews shares Hentai, Mature, JRPG, Nudity Fate/EXTELLA Fate/EXTELLA 91.6% · 969 reviews shares Mature, JRPG, Nudity, Hack And Slash Sakura Dungeon Sakura Dungeon 92.6% · 1,200 reviews shares Hentai, Mature, JRPG, Nudity Demons Roots Demons Roots 95.1% · 627 reviews shares Hentai, Mature, JRPG, Nudity

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-05-13.

GenresAction, Adventure, Indie, RPG
Player tagsSexual Content · Action · Female Protagonist · Anime · Nudity · RPG · Adventure · Indie · Hack and Slash · Gore · Cute · Violent (SteamSpy community voting)
FeaturesSingle-player · Steam Achievements · Steam Trading Cards · Partial Controller Support · Family Sharing
LanguagesSimplified Chinese, Japanese * , English, Traditional Chinese *
Achievements39
Official sitehttp://u-secret.net
Minimum system requirements (PC)

Minimum: Requires a 64-bit processor and operating system OS: Win7 64Bit/Win8 Win8.1 64Bit/Win10 64Bit Processor: Intel G620 or AMD X2 280 /AMD (APU) A6 9500 Memory: 6 GB RAM Graphics: Nvidia GeForce GTX750 or AMD GPU Radeon HD 6850 DirectX: Version 11 Storage: 15 GB available space