Sourcebound

A stealth game played by ear

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Every step, sonar pulse and hunter's call is a note in a score composed live as you play. The screen is black: put on headphones and follow the music down. The screen is black, and the dark plays music. Every footstep, every sonar pulse, every click of a hunter is a note, in tune and in time with the score, and each one sends out a wave that paints the walls in neon before the dark takes them back. Move quietly and you see almost nothing. Make noise and everything down here hears you. Sourcebound is a top-down stealth game played by ear. Best played with headphones. MUSIC PLAYED BY THE DARK The soundtrack is composed live and follows your run: calm while you explore, tighter when they find you. Every sound of the level is part of it, played by an orchestra whose instruments follow the music: strings and horns, saws and acid bass, organ and bells. Every two levels a new ambiance brings its own ensemble. Open the studio to listen to it. WHAT HUNTS YOU Blind things that click in red. They wander, they turn toward every noise, they come to look, and when they are close they chase. Deeper down you meet the sentinel that chants where it stands and howls to call the others, the tracker that follows your footprints, the prowler that makes no sound at all and only your sonar reveals, a guardian posted at the exit, and a colossus whose wave sweeps the whole level. LISTEN • Your sonar reveals everything around you, and every hunter hears it • Sprint to break away, but sprinting is loud • Sneak to go silent, at the price of being nearly blind • Throw a pebble to send them looking somewhere else DESCEND Collect the golden shards to unseal the exit, then go one level deeper. The levels are generated fresh every run, and no descent goes the same way twice. Twenty levels down lies the Source of silence. Reach it, or keep going into the endless dark. FREE AND FULL The first eight levels are free. The full version opens the descent all the way to the Source, the endless mode, the daily challenge, every level of Resonances, and the studio to compose your own ambiance. One purchase, no subscription. GROW STRONGER Every shard you collect is banked forever. Spend it on Resonances: permanent upgrades to your breath, your reach, your memory of the walls, your quiet steps. Each descent also offers a Relic: a single gift that lasts until you die. ALSO • Made for headphones: every creature is placed by ear • Eleven music ambiances, from Orchestral and Electro to Dub, Cathedral, Clockwork and Ritual • Ten strata down to the Source, each with its own look and music: nine visual themes (Neon, Lidar, Chalk, Cyanotype, Segments, Vector, Lidar 3D, Dungeon, Cave) • Full touch controls, designed for iPhone and iPad • English and French Every level and every bar of music in this game is generated as you play.

Ratings & Reviews

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• The ship on the studio screen can now be heard • The music is a little quieter by default, so the orchestra of each level comes through • Small fixes

Version 1.0.3

The developer, Guillaume Merle, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    Guillaume Merle
    Size
    112.9 MB
    Category
    Action
    Compatibility
    Requires iOS 15.0 or later.
    • iPhone
      Requires iOS 15.0 or later.
    • iPad
      Requires iPadOS 15.0 or later.
    • iPod touch
      Requires iOS 15.0 or later.
    • Mac
      Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and French
    Age Rating
    9+
    • 9+
    • Learn More
    • Infrequent
      Cartoon or Fantasy Violence
      Horror/Fear Themes
    In-App Purchases
    Yes
    Copyright
    © 2026 Petit Vaisseau
  • Developer Website
  • Privacy Policy

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