diff --git a/pkgs/by-name/in/interlude/deps.json b/pkgs/by-name/in/interlude/deps.json
new file mode 100644
index 000000000000..d99a60dda548
--- /dev/null
+++ b/pkgs/by-name/in/interlude/deps.json
@@ -0,0 +1,722 @@
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+    "hash": "sha256-vNIYnvlayuVj0WfRfYKpDrhDptlhp1pN8CYmlVd2TXw="
+  },
+  {
+    "pname": "System.IO.FileSystem.Primitives",
+    "version": "4.3.0",
+    "hash": "sha256-LMnfg8Vwavs9cMnq9nNH8IWtAtSfk0/Fy4s4Rt9r1kg="
+  },
+  {
+    "pname": "System.IO.UnmanagedMemoryStream",
+    "version": "4.3.0",
+    "hash": "sha256-PmUcbYTfYKTeqf2PZU+ePmdS8ekXlc4Z3eUoRV3wdos="
+  },
+  {
+    "pname": "System.Linq",
+    "version": "4.3.0",
+    "hash": "sha256-R5uiSL3l6a3XrXSSL6jz+q/PcyVQzEAByiuXZNSqD/A="
+  },
+  {
+    "pname": "System.Linq.Expressions",
+    "version": "4.3.0",
+    "hash": "sha256-+3pvhZY7rip8HCbfdULzjlC9FPZFpYoQxhkcuFm2wk8="
+  },
+  {
+    "pname": "System.Memory",
+    "version": "4.5.3",
+    "hash": "sha256-Cvl7RbRbRu9qKzeRBWjavUkseT2jhZBUWV1SPipUWFk="
+  },
+  {
+    "pname": "System.Net.Http",
+    "version": "4.3.0",
+    "hash": "sha256-UoBB7WPDp2Bne/fwxKF0nE8grJ6FzTMXdT/jfsphj8Q="
+  },
+  {
+    "pname": "System.Net.NameResolution",
+    "version": "4.3.0",
+    "hash": "sha256-eGZwCBExWsnirWBHyp2sSSSXp6g7I6v53qNmwPgtJ5c="
+  },
+  {
+    "pname": "System.Net.Primitives",
+    "version": "4.3.0",
+    "hash": "sha256-MY7Z6vOtFMbEKaLW9nOSZeAjcWpwCtdO7/W1mkGZBzE="
+  },
+  {
+    "pname": "System.Net.Sockets",
+    "version": "4.3.0",
+    "hash": "sha256-il7dr5VT/QWDg/0cuh+4Es2u8LY//+qqiY9BZmYxSus="
+  },
+  {
+    "pname": "System.Numerics.Vectors",
+    "version": "4.5.0",
+    "hash": "sha256-qdSTIFgf2htPS+YhLGjAGiLN8igCYJnCCo6r78+Q+c8="
+  },
+  {
+    "pname": "System.ObjectModel",
+    "version": "4.3.0",
+    "hash": "sha256-gtmRkWP2Kwr3nHtDh0yYtce38z1wrGzb6fjm4v8wN6Q="
+  },
+  {
+    "pname": "System.Private.Uri",
+    "version": "4.3.0",
+    "hash": "sha256-fVfgcoP4AVN1E5wHZbKBIOPYZ/xBeSIdsNF+bdukIRM="
+  },
+  {
+    "pname": "System.Reflection",
+    "version": "4.3.0",
+    "hash": "sha256-NQSZRpZLvtPWDlvmMIdGxcVuyUnw92ZURo0hXsEshXY="
+  },
+  {
+    "pname": "System.Reflection.Emit",
+    "version": "4.3.0",
+    "hash": "sha256-5LhkDmhy2FkSxulXR+bsTtMzdU3VyyuZzsxp7/DwyIU="
+  },
+  {
+    "pname": "System.Reflection.Emit.ILGeneration",
+    "version": "4.3.0",
+    "hash": "sha256-mKRknEHNls4gkRwrEgi39B+vSaAz/Gt3IALtS98xNnA="
+  },
+  {
+    "pname": "System.Reflection.Emit.Lightweight",
+    "version": "4.3.0",
+    "hash": "sha256-rKx4a9yZKcajloSZHr4CKTVJ6Vjh95ni+zszPxWjh2I="
+  },
+  {
+    "pname": "System.Reflection.Extensions",
+    "version": "4.3.0",
+    "hash": "sha256-mMOCYzUenjd4rWIfq7zIX9PFYk/daUyF0A8l1hbydAk="
+  },
+  {
+    "pname": "System.Reflection.Primitives",
+    "version": "4.3.0",
+    "hash": "sha256-5ogwWB4vlQTl3jjk1xjniG2ozbFIjZTL9ug0usZQuBM="
+  },
+  {
+    "pname": "System.Reflection.TypeExtensions",
+    "version": "4.3.0",
+    "hash": "sha256-4U4/XNQAnddgQIHIJq3P2T80hN0oPdU2uCeghsDTWng="
+  },
+  {
+    "pname": "System.Resources.ResourceManager",
+    "version": "4.3.0",
+    "hash": "sha256-idiOD93xbbrbwwSnD4mORA9RYi/D/U48eRUsn/WnWGo="
+  },
+  {
+    "pname": "System.Runtime",
+    "version": "4.3.0",
+    "hash": "sha256-51813WXpBIsuA6fUtE5XaRQjcWdQ2/lmEokJt97u0Rg="
+  },
+  {
+    "pname": "System.Runtime.CompilerServices.Unsafe",
+    "version": "4.7.0",
+    "hash": "sha256-pORThFo85P8TrmfZCCPIXysVPcV2nW8hRlO6z4jVJps="
+  },
+  {
+    "pname": "System.Runtime.CompilerServices.Unsafe",
+    "version": "5.0.0",
+    "hash": "sha256-neARSpLPUzPxEKhJRwoBzhPxK+cKIitLx7WBYncsYgo="
+  },
+  {
+    "pname": "System.Runtime.Extensions",
+    "version": "4.3.0",
+    "hash": "sha256-wLDHmozr84v1W2zYCWYxxj0FR0JDYHSVRaRuDm0bd/o="
+  },
+  {
+    "pname": "System.Runtime.Handles",
+    "version": "4.3.0",
+    "hash": "sha256-KJ5aXoGpB56Y6+iepBkdpx/AfaJDAitx4vrkLqR7gms="
+  },
+  {
+    "pname": "System.Runtime.InteropServices",
+    "version": "4.3.0",
+    "hash": "sha256-8sDH+WUJfCR+7e4nfpftj/+lstEiZixWUBueR2zmHgI="
+  },
+  {
+    "pname": "System.Runtime.InteropServices.RuntimeInformation",
+    "version": "4.3.0",
+    "hash": "sha256-MYpl6/ZyC6hjmzWRIe+iDoldOMW1mfbwXsduAnXIKGA="
+  },
+  {
+    "pname": "System.Runtime.Numerics",
+    "version": "4.3.0",
+    "hash": "sha256-P5jHCgMbgFMYiONvzmaKFeOqcAIDPu/U8bOVrNPYKqc="
+  },
+  {
+    "pname": "System.Security.AccessControl",
+    "version": "4.5.0",
+    "hash": "sha256-AFsKPb/nTk2/mqH/PYpaoI8PLsiKKimaXf+7Mb5VfPM="
+  },
+  {
+    "pname": "System.Security.Claims",
+    "version": "4.3.0",
+    "hash": "sha256-Fua/rDwAqq4UByRVomAxMPmDBGd5eImRqHVQIeSxbks="
+  },
+  {
+    "pname": "System.Security.Cryptography.Algorithms",
+    "version": "4.3.0",
+    "hash": "sha256-tAJvNSlczYBJ3Ed24Ae27a55tq/n4D3fubNQdwcKWA8="
+  },
+  {
+    "pname": "System.Security.Cryptography.Cng",
+    "version": "4.3.0",
+    "hash": "sha256-u17vy6wNhqok91SrVLno2M1EzLHZm6VMca85xbVChsw="
+  },
+  {
+    "pname": "System.Security.Cryptography.Csp",
+    "version": "4.3.0",
+    "hash": "sha256-oefdTU/Z2PWU9nlat8uiRDGq/PGZoSPRgkML11pmvPQ="
+  },
+  {
+    "pname": "System.Security.Cryptography.Encoding",
+    "version": "4.3.0",
+    "hash": "sha256-Yuge89N6M+NcblcvXMeyHZ6kZDfwBv3LPMDiF8HhJss="
+  },
+  {
+    "pname": "System.Security.Cryptography.OpenSsl",
+    "version": "4.3.0",
+    "hash": "sha256-DL+D2sc2JrQiB4oAcUggTFyD8w3aLEjJfod5JPe+Oz4="
+  },
+  {
+    "pname": "System.Security.Cryptography.Primitives",
+    "version": "4.3.0",
+    "hash": "sha256-fnFi7B3SnVj5a+BbgXnbjnGNvWrCEU6Hp/wjsjWz318="
+  },
+  {
+    "pname": "System.Security.Cryptography.X509Certificates",
+    "version": "4.3.0",
+    "hash": "sha256-MG3V/owDh273GCUPsGGraNwaVpcydupl3EtPXj6TVG0="
+  },
+  {
+    "pname": "System.Security.Principal",
+    "version": "4.3.0",
+    "hash": "sha256-rjudVUHdo8pNJg2EVEn0XxxwNo5h2EaYo+QboPkXlYk="
+  },
+  {
+    "pname": "System.Security.Principal.Windows",
+    "version": "4.3.0",
+    "hash": "sha256-mbdLVUcEwe78p3ZnB6jYsizNEqxMaCAWI3tEQNhRQAE="
+  },
+  {
+    "pname": "System.Security.Principal.Windows",
+    "version": "4.5.0",
+    "hash": "sha256-BkUYNguz0e4NJp1kkW7aJBn3dyH9STwB5N8XqnlCsmY="
+  },
+  {
+    "pname": "System.Text.Encoding",
+    "version": "4.3.0",
+    "hash": "sha256-GctHVGLZAa/rqkBNhsBGnsiWdKyv6VDubYpGkuOkBLg="
+  },
+  {
+    "pname": "System.Text.Encoding.Extensions",
+    "version": "4.3.0",
+    "hash": "sha256-vufHXg8QAKxHlujPHHcrtGwAqFmsCD6HKjfDAiHyAYc="
+  },
+  {
+    "pname": "System.Text.RegularExpressions",
+    "version": "4.3.0",
+    "hash": "sha256-VLCk1D1kcN2wbAe3d0YQM/PqCsPHOuqlBY1yd2Yo+K0="
+  },
+  {
+    "pname": "System.Threading",
+    "version": "4.3.0",
+    "hash": "sha256-ZDQ3dR4pzVwmaqBg4hacZaVenQ/3yAF/uV7BXZXjiWc="
+  },
+  {
+    "pname": "System.Threading.Tasks",
+    "version": "4.3.0",
+    "hash": "sha256-Z5rXfJ1EXp3G32IKZGiZ6koMjRu0n8C1NGrwpdIen4w="
+  },
+  {
+    "pname": "System.Threading.Tasks.Extensions",
+    "version": "4.3.0",
+    "hash": "sha256-X2hQ5j+fxcmnm88Le/kSavjiGOmkcumBGTZKBLvorPc="
+  },
+  {
+    "pname": "System.Threading.Tasks.Parallel",
+    "version": "4.3.0",
+    "hash": "sha256-8H2vRmsn29MNfMmCeIL5vHfbM19jWaLDKNLzDonCI+c="
+  },
+  {
+    "pname": "System.Threading.ThreadPool",
+    "version": "4.3.0",
+    "hash": "sha256-wW0QdvssRoaOfQLazTGSnwYTurE4R8FxDx70pYkL+gg="
+  },
+  {
+    "pname": "System.Threading.Timer",
+    "version": "4.3.0",
+    "hash": "sha256-pmhslmhQhP32TWbBzoITLZ4BoORBqYk25OWbru04p9s="
+  },
+  {
+    "pname": "System.ValueTuple",
+    "version": "4.5.0",
+    "hash": "sha256-niH6l2fU52vAzuBlwdQMw0OEoRS/7E1w5smBFoqSaAI="
+  },
+  {
+    "pname": "System.Xml.ReaderWriter",
+    "version": "4.3.0",
+    "hash": "sha256-QQ8KgU0lu4F5Unh+TbechO//zaAGZ4MfgvW72Cn1hzA="
+  },
+  {
+    "pname": "System.Xml.XDocument",
+    "version": "4.3.0",
+    "hash": "sha256-rWtdcmcuElNOSzCehflyKwHkDRpiOhJJs8CeQ0l1CCI="
+  }
+]
diff --git a/pkgs/by-name/in/interlude/package.nix b/pkgs/by-name/in/interlude/package.nix
new file mode 100644
index 000000000000..e2272f859556
--- /dev/null
+++ b/pkgs/by-name/in/interlude/package.nix
@@ -0,0 +1,116 @@
+{
+  lib,
+  buildDotnetModule,
+  fetchFromGitHub,
+  fetchpatch,
+  dotnetCorePackages,
+  copyDesktopItems,
+  makeDesktopItem,
+  nix-update-script,
+  imagemagick,
+  libbass,
+  libbass_fx,
+  glfw,
+  alsa-lib,
+}:
+
+let
+  version = "0.7.28.1";
+in
+buildDotnetModule {
+  pname = "interlude";
+  inherit version;
+
+  src = fetchFromGitHub {
+    owner = "YAVSRG";
+    repo = "YAVSRG";
+    tag = "interlude-v${version}";
+    fetchSubmodules = true;
+    hash = "sha256-0Qbnywbq4cs/WPhvCou31FFKdqjRhZ4Aww06D1h5Nx4=";
+  };
+
+  patches = [
+    # Fallback game dir when the executable dir is not writable
+    # https://github.com/YAVSRG/YAVSRG/pull/65
+    (fetchpatch {
+      name = "log-path.patch";
+      url = "https://github.com/YAVSRG/YAVSRG/commit/6e56a3d78caf4cbc8e17190fea3adb4d061d5284.patch";
+      hash = "sha256-eyvq2GIAZuHYhtAdYLe0csJxHZCrw9soXmRl2eJA7Bg=";
+    })
+
+    # Looking for bass and bass_fx in LD_LIBRARY_PATH
+    # https://github.com/YAVSRG/YAVSRG/pull/66
+    (fetchpatch {
+      name = "library-path.patch";
+      url = "https://github.com/YAVSRG/YAVSRG/commit/911a8b7f3931823d9fee99f0cb679a3c03298286.patch";
+      hash = "sha256-WUbI38EMGvlVl8h7YLJLPsGczhX5PWMLTmy94IRxaBM=";
+    })
+  ];
+
+  nativeBuildInputs = [
+    copyDesktopItems
+    imagemagick
+  ];
+
+  projectFile = "interlude/src/Interlude.fsproj";
+  nugetDeps = ./deps.json;
+  dotnet-sdk = dotnetCorePackages.sdk_9_0;
+  dotnet-runtime = dotnetCorePackages.runtime_9_0;
+
+  runtimeDeps = [
+    # replaced bundled ones in engine/lib/linux-x64
+    libbass
+    libbass_fx
+    # replace the bundled one by OpenTK
+    glfw
+    # not sure why this is needed but no audio devices can be found by libbass without this
+    alsa-lib
+  ];
+
+  executables = [ "Interlude" ];
+
+  postInstall = ''
+    # The icon is pixel art, so it may be converted to a scalable SVG.
+    mkdir -p $out/share/icons/hicolor/scalable/apps
+    magick site/files/favicon.png -alpha on -sample 20x20! txt:- | \
+      sed '1d; s/[():,]/ /g' | \
+      awk '{if ($6>0) printf "<rect x=\"%d\" y=\"%d\" width=\"4\" height=\"4\" fill=\"rgb(%d,%d,%d)\" />\n",$1*4,$2*4,$3,$4,$5}' | \
+      (echo '<svg width="80" height="80" xmlns="http://www.w3.org/2000/svg" shape-rendering="crispEdges">'; cat; echo '</svg>') \
+      > $out/share/icons/hicolor/scalable/apps/interlude.svg
+  '';
+
+  preFixup = ''
+    # Remove bundled GLFW and use the one from nixpkgs instead.
+    rm $out/lib/interlude/libglfw* || true
+  '';
+
+  desktopItems = [
+    (makeDesktopItem {
+      name = "Interlude";
+      exec = "Interlude %U";
+      comment = "A keyboard rhythm game, built for fun";
+      icon = "interlude";
+      desktopName = "Interlude";
+      genericName = "Interlude";
+      categories = [
+        "Game"
+        "Music"
+      ];
+    })
+  ];
+
+  passthru.updateScript = nix-update-script { };
+
+  meta = {
+    description = "Keyboard rhythm game built for fun, part of the YAVSRG project";
+    homepage = "https://www.yavsrg.net";
+    changelog = "https://www.yavsrg.net/interlude/changelog.html";
+    license = with lib.licenses; [
+      gpl3Only
+      mit
+    ];
+    maintainers = with lib.maintainers; [ ulysseszhan ];
+    platforms = lib.platforms.linux;
+    mainProgram = "Interlude";
+  };
+}