| App ID | 2774150 |
| App Type | Game |
| Developer | 非稳态物质-Unstable Matter |
| Publisher | 非稳态物质-Unstable Matter |
| Supported Systems | Windows |
| Technologies | Unity Engine |
| Last Changenumber | 30513199 |
| Last Record Update | 10 August 2025 – 07:40:48 UTC ( |
| Release Date | 29 March 2024 – 03:31:48 UTC ( |
The game will center around two investigators who uncover a profound terror while delving into consecutive disappearances. A man with a dual-layered memory, a fragmented reality, an endless rainy night... What in the world is the Black Stone? Could it possibly mark the genesis of everything?
Steam price history
Current Price
$4.99
Lowest Recorded Price
$2.99 at -40%
31 October 2024
| Currency | Current Price | Converted Price | Lowest Recorded Price | ||
|---|---|---|---|---|---|
 U.S. Dollar |
$4.99 | $4.99 | $2.99 | $2.99 at -40% | |
 Russian Ruble |
200 ₽ | $2.51 | -49.66% | $1.50 | 120 ₽ at -40% |
 Kazakhstani Tenge |
1500₸ | $2.78 | -44.17% | $1.67 | 900₸ at -40% |
 Vietnamese Dong |
73500₫ | $2.79 | -44.00% | $1.67 | 44000₫ at -40% |
 Indian Rupee |
₹ 250 | $2.84 | -42.95% | $1.70 | ₹ 150 at -40% |
 Indonesian Rupiah |
Rp 47499 | $2.86 | -42.68% | $1.71 | Rp 28499 at -40% |
 Ukrainian Hryvnia |
124₴ | $2.96 | -40.55% | $1.77 | 74₴ at -40% |
 Philippine Peso |
₱174.95 | $2.97 | -40.33% | $1.78 | ₱104.97 at -40% |
 LATAM - U.S. Dollar |
$2.99 | $2.99 | -40.08% | $1.79 | $1.79 at -40% |
 MENA - U.S. Dollar |
$2.99 | $2.99 | -40.08% | $1.79 | $1.79 at -40% |
 South Asia - USD |
$2.99 | $2.99 | -40.08% | $1.79 | $1.79 at -40% |
 South African Rand |
R 52.00 | $3.01 | -39.63% | $1.80 | R 31.20 at -40% |
 Chinese Yuan |
¥ 22 | $3.08 | -38.09% | $1.85 | ¥ 13.20 at -40% |
 Brazilian Real |
R$ 16,99 | $3.15 | -36.82% | $1.89 | R$ 10,19 at -40% |
 Chilean Peso |
CLP$ 3000 | $3.18 | -36.17% | $1.91 | CLP$ 1800 at -40% |
 Saudi Riyal |
11.95 SR | $3.18 | -36.14% | $1.91 | 7.17 SR at -40% |
 CIS - U.S. Dollar |
$3.29 | $3.29 | -34.07% | $1.97 | $1.97 at -40% |
 Taiwan Dollar |
NT$ 102 | $3.30 | -33.74% | $1.97 | NT$ 61 at -40% |
 Malaysian Ringgit |
RM13.99 | $3.31 | -33.63% | $1.98 | RM8.39 at -40% |
 Colombian Peso |
COL$ 13500 | $3.47 | -30.32% | $2.08 | COL$ 8100 at -40% |
 Mexican Peso |
Mex$ 64.49 | $3.49 | -29.97% | $2.09 | Mex$ 38.69 at -40% |
 Thai Baht |
฿115.00 | $3.52 | -29.42% | $2.11 | ฿69.00 at -40% |
 Peruvian Sol |
S/.12.00 | $3.54 | -28.95% | $2.12 | S/.7.20 at -40% |
 Qatari Riyal |
12.99 QR | $3.56 | -28.51% | $2.13 | 7.79 QR at -40% |
 Kuwaiti Dinar |
1.10 KD | $3.58 | -28.11% | $2.15 | 0.66 KD at -40% |
 Japanese Yen |
¥ 580 | $3.79 | -23.93% | $2.27 | ¥ 348 at -40% |
 South Korean Won |
₩ 5600 | $3.89 | -22.01% | $2.33 | ₩ 3360 at -40% |
 Uruguayan Peso |
$U159 | $3.98 | -20.08% | $2.38 | $U95 at -40% |
 Singapore Dollar |
S$5.25 | $4.04 | -19.01% | $2.42 | S$3.15 at -40% |
 U.A.E. Dirham |
15.00 AED | $4.08 | -18.16% | $2.45 | 9.00 AED at -40% |
 Hong Kong Dollar |
HK$ 33.00 | $4.24 | -14.89% | $2.54 | HK$ 19.80 at -40% |
 New Zealand Dollar |
NZ$ 7.39 | $4.24 | -14.86% | $2.54 | NZ$ 4.43 at -40% |
 Canadian Dollar |
CDN$ 6.49 | $4.63 | -7.13% | $2.77 | CDN$ 3.89 at -40% |
 Costa Rican Colon |
₡2400 | $4.77 | -4.23% | $2.86 | ₡1440 at -40% |
 Australian Dollar |
A$ 7.50 | $4.88 | -2.14% | $2.92 | A$ 4.50 at -40% |
 Norwegian Krone |
55,49 kr | $5.53 | +11.02% | $3.32 | 33,29 kr at -40% |
 Israeli New Shekel |
₪18.50 | $5.63 | +12.86% | $3.37 | ₪11.10 at -40% |
 British Pound |
£4.29 | $5.70 | +14.39% | $3.41 | £2.57 at -40% |
 Euro |
4,99€ | $5.80 | +16.25% | $3.47 | 2,99€ at -40% |
 Polish Zloty |
22,99zł | $6.29 | +26.20% | $3.77 | 13,79zł at -40% |
 Swiss Franc |
CHF 5.49 | $6.89 | +38.26% | $4.13 | CHF 3.29 at -40% |
Valve suggested prices are shown on package pages.
Price history
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Additional Information
| Developer | 非稳态物质-Unstable Matter | |||||||||||||||||
| community_visible_stats | Yes | |||||||||||||||||
| ReleaseState | released | |||||||||||||||||
| Publisher | 非稳态物质-Unstable Matter | |||||||||||||||||
| Store Release Date | 29 March 2024 – 03:31:51 UTC ( |
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| osarch | empty string | |||||||||||||||||
| community_hub_visible | Yes | |||||||||||||||||
| Social Media | https://space.bilibili.com/442876378 https://weibo.com/u/7242984074 |
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| Primary Genre | Indie (23) | |||||||||||||||||
| Store Genres | Casual (4), Indie (23) | |||||||||||||||||
| Steam Release Date | 29 March 2024 – 03:31:48 UTC ( |
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| Store Asset Modification Time | 17 April 2025 – 09:33:43 UTC ( |
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| library_assets |
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| osextended | empty string | |||||||||||||||||
| review_score | 7 | |||||||||||||||||
| review_percentage | 81 | |||||||||||||||||
| Detected Technologies (?) | Unity Engine, Protocol_Buffers SDK, SteamworksNET SDK, UnityBurst SDK, cURL SDK | |||||||||||||||||
| controllertagwizard | Yes | |||||||||||||||||
| First seen on SteamDB | 8 January 2024 – 02:52:37 UTC ( |
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Supported Languages
| 2 Languages | Interface | Full Audio | Subtitles | Achievements |
|---|---|---|---|---|
| Simplified Chinese | Yes | Yes | Yes | Yes |
| English | Yes | Yes | Yes | Yes |
Assets
Load all asset images| clienticon | 65cf6fc2c24e175b72d44fe654c5435d62e708b1 | ||||||||||||||||||||||||||||
| clienttga | 195cbdac41a53617804bbf123b762ced7d5c17b7 | ||||||||||||||||||||||||||||
| icon | 010a546cecd64f90a0b7482752d996c168bcea39 | ||||||||||||||||||||||||||||
| small_capsule |
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| header_image |
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| library_assets_full |
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| Assets |
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| trailer_name | 黑石 |
| trailer_category | 3 |
| trailer_480p ↴ | |
| video/webm | 256992737/movie480_vp9.webm |
| video/mp4 | 256992737/movie480.mp4 |
| trailer_max ↴ | |
| video/webm | 256992737/movie_max_vp9.webm |
| video/mp4 | 256992737/movie_max.mp4 |
| microtrailer ↴ | |
| video/webm | 2774150/647559/23048b4d4c60bfaa257c0dda637dfe22fb8b10ac/1750898781/microtrailer.webm |
| video/mp4 | 2774150/647559/23048b4d4c60bfaa257c0dda637dfe22fb8b10ac/1750898781/microtrailer.mp4 |
| adaptive_trailers ↴ | |
| dash_av1 | 2774150/647559/23048b4d4c60bfaa257c0dda637dfe22fb8b10ac/1750898781/dash_av1.mpd |
| dash_h264 | 2774150/647559/23048b4d4c60bfaa257c0dda637dfe22fb8b10ac/1750898781/dash_h264.mpd |
| hls_h264 | 2774150/647559/23048b4d4c60bfaa257c0dda637dfe22fb8b10ac/1750898781/hls_264_master.m3u8 |
| screenshot_medium | 256992737/movie.293x165.jpg |
| screenshot_full | 256992737/movie_full.jpg |
| all_ages | true |
| is_highlight | true |
| timestamp | 16 January 2024 – 16:27:56 UTC |
