diff --git a/AGENTS.md b/AGENTS.md
index 80e7e25..bd8749d 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -96,3 +96,5 @@
 - In this monorepo, "dotfiles" refers to the dotfiles/NixOS configuration under `src/dotfiles/` and `configs/nixos/`.
 - The flake does not currently define `formatter.x86_64-linux`.
   Do not use `nix fmt` as a validation command until a formatter is added.
+- Ariadne extraction must preserve the game-root season prefix for archived source.
+  Different game installs can contain compiled scripts with the same internal path.
diff --git a/src/ariadne/README.md b/src/ariadne/README.md
index 1d25d73..bbadaaa 100644
--- a/src/ariadne/README.md
+++ b/src/ariadne/README.md
@@ -18,6 +18,8 @@ The script defaults to `<workspace>/src/ariadne/output`.
 This path stays stable when you run the command from inside `src/ariadne`.
 Use the game installation directory as the game root.
 One run processes all installed season directories.
+Extracted archive source keeps the archive path relative to the game root, so files with the same
+internal path from different season installs do not overwrite each other.
 If `rpycdec` is not available, the script uses `extract-tools.nix` to enter a Nix shell.
 
 Keep the script as a thin orchestration layer.
diff --git a/src/ariadne/extract-and-decompile.sh b/src/ariadne/extract-and-decompile.sh
index 0249baa..8aca368 100755
--- a/src/ariadne/extract-and-decompile.sh
+++ b/src/ariadne/extract-and-decompile.sh
@@ -68,7 +68,12 @@ say() {
 }
 
 game_root=
-default_output_root=${BUILD_WORKSPACE_DIRECTORY:-$(pwd)}/src/ariadne/output
+script_dir=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)
+if [[ -n "${BUILD_WORKSPACE_DIRECTORY:-}" ]]; then
+  default_output_root=$BUILD_WORKSPACE_DIRECTORY/src/ariadne/output
+else
+  default_output_root=$script_dir/output
+fi
 output_root=$default_output_root
 force=false
 original_args=("$@")
@@ -149,20 +154,42 @@ is_renpy_runtime_path() {
   [[ "$relative" == renpy/* || "$relative" == */renpy/* ]]
 }
 
+source_output_path() {
+  local relative=$1
+  local destination_prefix=${2:-}
+  if [[ -n "$destination_prefix" ]]; then
+    printf '%s/%s/%s\n' "$source_dir" "$destination_prefix" "$relative"
+  else
+    printf '%s/%s\n' "$source_dir" "$relative"
+  fi
+}
+
+source_log_relative() {
+  local relative=$1
+  local destination_prefix=${2:-}
+  if [[ -n "$destination_prefix" ]]; then
+    printf '%s/%s\n' "$destination_prefix" "$relative"
+  else
+    printf '%s\n' "$relative"
+  fi
+}
+
 copy_source_file() {
   local input=$1
   local input_root=$2
   local label=$3
-  local relative output
+  local destination_prefix=${4:-}
+  local relative output log_relative
   relative=$(realpath --relative-to="$input_root" "$input")
+  log_relative=$(source_log_relative "$relative" "$destination_prefix")
   if is_renpy_runtime_path "$relative"; then
-    log "skipped $label Ren'Py runtime source: $relative"
+    log "skipped $label Ren'Py runtime source: $log_relative"
     return
   fi
-  output=$source_dir/$relative
+  output=$(source_output_path "$relative" "$destination_prefix")
   mkdir -p -- "$(dirname -- "$output")"
   cp -- "$input" "$output"
-  record "copied $label source: $relative"
+  record "copied $label source: $log_relative"
 }
 
 copy_loose_source() {
@@ -172,37 +199,43 @@ copy_loose_source() {
 decompile_compiled_script() {
   local input=$1
   local input_root=$2
-  local relative output_dir log_file
+  local destination_prefix=${3:-}
+  local relative output_dir log_file log_relative
   relative=$(realpath --relative-to="$input_root" "$input")
+  log_relative=$(source_log_relative "$relative" "$destination_prefix")
   if is_renpy_runtime_path "$relative"; then
-    log "skipped Ren'Py runtime compiled script: $relative"
+    log "skipped Ren'Py runtime compiled script: $log_relative"
     return
   fi
-  output_dir=$source_dir/$(dirname -- "$relative")
-  log_file=$logs_dir/decompile-${relative//\//__}.log
+  output_dir=$(source_output_path "$(dirname -- "$relative")" "$destination_prefix")
+  log_file=$logs_dir/decompile-${log_relative//\//__}.log
   mkdir -p -- "$output_dir"
-  say "decompiling script: $relative"
+  say "decompiling script: $log_relative"
   RPYCDEC_NO_WARNING=1 rpycdec decompile --output "$output_dir" "$input" > "$log_file" 2>&1
-  log "decompiled script: $relative"
+  log "decompiled script: $log_relative"
 }
 
 extract_archive() {
   local archive=$1
-  local relative archive_output log_file
+  local relative archive_output log_file destination_prefix
   relative=$(relative_to_game_root "$archive")
   archive_output=$work_dir/archives/${relative%.rpa}
   log_file=$logs_dir/unrpa-${relative//\//__}.log
+  destination_prefix=$(dirname -- "$relative")
+  if [[ "$destination_prefix" == "." ]]; then
+    destination_prefix=
+  fi
   mkdir -p -- "$archive_output"
   say "extracting archive: $relative"
   RPYCDEC_NO_WARNING=1 rpycdec unrpa --output "$archive_output" "$archive" > "$log_file" 2>&1
   log "extracted archive: $relative"
 
   while IFS= read -r -d '' archived_source; do
-    copy_source_file "$archived_source" "$archive_output" archived
+    copy_source_file "$archived_source" "$archive_output" archived "$destination_prefix"
   done < <(find "$archive_output" -type f -name '*.rpy' -print0 | sort -z)
 
   while IFS= read -r -d '' compiled; do
-    decompile_compiled_script "$compiled" "$archive_output"
+    decompile_compiled_script "$compiled" "$archive_output" "$destination_prefix"
   done < <(find "$archive_output" -type f \( -name '*.rpyc' -o -name '*.rpymc' \) -print0 | sort -z)
 }
 
diff --git a/src/ariadne/extract-tools.nix b/src/ariadne/extract-tools.nix
index 70bd6b9..2f20db7 100644
--- a/src/ariadne/extract-tools.nix
+++ b/src/ariadne/extract-tools.nix
@@ -23,6 +23,7 @@ pkgs.buildEnv {
     pkgs.bash
     pkgs.coreutils
     pkgs.findutils
+    pkgs.python3
     rpycdec
   ];
 }