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Thalassa: Edge of the Abyss

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App ID 1783680
App Type Game
Developer
Publisher Team17 Digital Ltd
Franchise Team17 Digital Ltd
Supported Systems Windows
Technologies Unreal Engine
Last Changenumber 30508008
Last Record Update 9 August 2025 – 17:34:29 UTC ()
Release Date 1 August 2024 – 15:58:16 UTC ()
❓ 81.58%
253 reviews
2
In-Game
🗺️ Adventure 📚 Interactive Fiction 🙌 First-Person 🌫 Atmospheric 💔 Emotional

Uncover the mystery of Thalassa, a first-person psychological drama set under the sea. Ill-fate has fallen on your former crew and friends and it’s up to you to find answers onboard the wreckage. Experience the melancholic underwater journey of human stories facing life and loss.

Additional Information

Developer Sarepta Studio
controller_support full
community_visible_stats Yes
DLCAvailableOnStore Yes
ReleaseState released
Publisher Team17 Digital Ltd
Store Release Date 1 August 2024 – 15:58:20 UTC ()
osarch 64
community_hub_visible Yes
Social Media https://discord.gg/4tysgGsrWA
Primary Genre Indie (23)
Store Genres Adventure (25), Indie (23), RPG (3)
Steam Release Date 1 August 2024 – 15:58:16 UTC ()
Store Asset Modification Time 18 February 2025 – 09:56:22 UTC () (1739872582)
library_assets
library_capsuleen,zh-tw
library_heroen
library_logoen,zh-tw
library_headeren
logo_position ↴
pinned_positionCenterCenter
width_pct43.55179886116531
height_pct100
osextended empty string
review_score 8
review_percentage 88
Detected Technologies (?) Unreal Engine, NVIDIA_APEX SDK, NVIDIA_Nsight_Aftermath SDK, NVIDIA_PhysX SDK, NvCloth SDK, Ogg SDK, Vorbis SDK, Wwise SDK, XAudio2 SDK, iZotope SDK
Steam Deck Compatibility
  • Steam Deck:
  • Some in-game text is small and may be difficult to read
  • This game requires manual configuration of graphics settings to perform well on Steam Deck
  • This game is incorrectly scaled on Steam Deck and may require you to configure the display resolution manually
  • All functionality is accessible when using the default controller configuration
  • This game shows Steam Deck controller icons
  • Note: This game does not default to external Bluetooth/USB controllers on Deck, and may require manually switching the active controller via the Quick Access Menu
  •  
  • SteamOS:
  • This game runs successfully on SteamOS
  • Note: This game is incorrectly scaled on SteamOS and may require you to configure the display resolution manually
  • Note: This game does not default to external Bluetooth/USB controllers on SteamOS, and may require manually switching the active controller via the Quick Access Menu
  •  
  • category: Playable
  • steamos_compatibility: Compatible
  • test_timestamp: 28 March 2025 – 00:00:00 UTC
  • tested_build_id: 15692779
  • configuration:
    supported_inputgamepad
    requires_manual_keyboard_invoke0
    requires_non_controller_launcher_nav0
    primary_player_is_controller_slot_01
    non_deck_display_glyphs0
    small_text1
    requires_internet_for_setup0
    requires_internet_for_singleplayer0
    recommended_runtimeproton-9.0-4RC
    requires_h2640
    requires_voice_files0
    gamescope_frame_limiter_not_supported0
    hdr_support0
Content Descriptors General Mature Content (5)
controllertagwizard Yes
First seen on SteamDB 6 October 2021 – 13:51:06 UTC (), in changelist #12772673
Content Descriptors (Including DLC) General Mature Content (5)

Supported Languages

11 Languages Interface Full Audio Subtitles Achievements
English Yes Yes Yes Yes
French Yes Yes Yes
Italian Yes Yes Yes
German Yes Yes Yes
Spanish - Spain Yes Yes Yes
Japanese Yes Yes Yes
Korean Yes Yes Yes
Norwegian Yes Yes Yes
Russian Yes Yes Yes
Simplified Chinese Yes Yes Yes
Traditional Chinese Yes Yes Yes

Tags

🗺️ Adventure 📚 Interactive Fiction 🙌 First-Person 🌫 Atmospheric 💔 Emotional 🫂 Psychological 👤 Singleplayer 📚 Story Rich 🌱 Indie 🗺 Exploration 🎲 RPG 🌊 Underwater 🚶 Walking Simulator 🕵️ Detective 🤫 Mystery 🎭 Drama 📚 Narrative 🌎 Immersive

Categories

Single-player Steam Achievements Steam Cloud Family Sharing Cloud Gaming Cloud Gaming (NVIDIA)

Hardware Categories

Full Controller Support DualShock Controllers (USB Only) DualSense Controllers (USB Only)

Assets

Load all asset images
clienticon 3eedf292741f7568bef1aae61a20ccadfc5315d1
clienttga 9028ca9d058edfe64bbf0ed28b6d49b0aa6f9e40
icon 481e8ced7661461e363057bbf8847a5b03e50c6c
small_capsule
englishcapsule_231x87.jpg
header_image
englishheader.jpg
library_assets_full
library_capsule ↴
image/englishlibrary_600x900.jpg
image/tchineselibrary_600x900_tchinese.jpg
image2x/englishlibrary_600x900_2x.jpg
library_hero ↴
image/englishlibrary_hero.jpg
image2x/englishlibrary_hero_2x.jpg
library_logo ↴
image/englishlogo.png
image/tchineselogo_tchinese.png
logo_position/pinned_positionCenterCenter
logo_position/width_pct43.55179886116531
logo_position/height_pct100
image2x/englishlogo_2x.png
image2x/tchineselogo_tchinese_2x.png
library_header ↴
image/englishlibrary_header.jpg
Assets
main_capsulecapsule_616x353.jpg
small_capsulecapsule_231x87.jpg
headerheader.jpg
page_backgroundpage_bg_generated_v6b.jpg
hero_capsulehero_capsule.jpg
library_capsulelibrary_600x900.jpg
library_capsule_2xlibrary_600x900_2x.jpg
library_herolibrary_hero.jpg
library_hero_2xlibrary_hero_2x.jpg
community_icon481e8ced7661461e363057bbf8847a5b03e50c6c.jpg
page_background_pathapp/1783680
raw_page_backgroundpage_bg_raw.jpg
timestamp18 February 2025 – 17:01:30 UTC
Trailers
257042472 ↴
trailer_nameThalassa - Launch Trailer
trailer_category1
trailer_480p/video/webm257042472/movie480_vp9.webm
trailer_480p/video/mp4257042472/movie480.mp4
trailer_max/video/webm257042472/movie_max_vp9.webm
trailer_max/video/mp4257042472/movie_max.mp4
microtrailer/video/webm1783680/734029/09eaf1df7bdc785dac598eab0a3d13b4301279a8/1750735744/microtrailer.webm
microtrailer/video/mp41783680/734029/09eaf1df7bdc785dac598eab0a3d13b4301279a8/1750735744/microtrailer.mp4
screenshot_medium257042472/movie.293x165.jpg
screenshot_full257042472/movie_full.jpg
trailer_base_id734029
all_agestrue
is_highlighttrue
timestamp1722520889
257042301 ↴
trailer_nameChinese launch trailer
trailer_category1
trailer_480p/video/webm257042301/movie480_vp9.webm
trailer_480p/video/mp4257042301/movie480.mp4
trailer_max/video/webm257042301/movie_max_vp9.webm
trailer_max/video/mp4257042301/movie_max.mp4
microtrailer/video/webm1783680/733734/470acebef80fbd3ead3ecbdf89008887bbef56a5/1750735733/microtrailer.webm
microtrailer/video/mp41783680/733734/470acebef80fbd3ead3ecbdf89008887bbef56a5/1750735733/microtrailer.mp4
screenshot_medium257042301/movie.293x165.jpg
screenshot_full257042301/movie_full.jpg
trailer_base_id733734
all_agestrue
is_highlighttrue
timestamp1722520894
257017206 ↴
trailer_nameThalassa - Announce Trailer
trailer_category0
trailer_480p/video/webm257017206/movie480_vp9.webm
trailer_480p/video/mp4257017206/movie480.mp4
trailer_max/video/webm257017206/movie_max_vp9.webm
trailer_max/video/mp4257017206/movie_max.mp4
microtrailer/video/webm1783680/689633/c960622d108e3ad5fef4e660e3be516b02962906/1750735732/microtrailer.webm
microtrailer/video/mp41783680/689633/c960622d108e3ad5fef4e660e3be516b02962906/1750735732/microtrailer.mp4
screenshot_medium257017206/movie.293x165.jpg
screenshot_full257017206/movie_full.jpg
trailer_base_id689633
all_agestrue
is_highlighttrue
timestamp1718957474

History

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