For Top Speed always try to get a valid download link.

.codex/skills/linux-game-manager-dev/references/core-map.md

@@ -1,6 +1,6 @@
 # Linux Game Manager Core Map
 
-Last refreshed: 2026-04-12
+Last refreshed: 2026-04-14
 
 ## Top-Level Structure
 
@@ -16,7 +16,7 @@ Last refreshed: 2026-04-12
 
 - Installers: 42 (`.install/*.sh`)
 - Launcher definitions: 42 (`.launch/*.game`)
-- Launcher runnable entries: 30 (`.launch/*.sh`, both symlinks and files)
+- Launcher runnable entries: 31 (`.launch/*.sh`, both symlinks and files)
 - Update scripts: 5 (`.update/*.sh`)
 
 Regenerate this snapshot with:
@@ -30,7 +30,8 @@ python3 .codex/skills/linux-game-manager-dev/scripts/audit_game_catalog.py
 1. **Install flow**
 - `game_installer` builds menu from `.install/*.sh`.
 - Selected installer is sourced in the current shell.
-- Shared downloads try `curl` first, fall back to `wget` when available, and reject obvious HTML error pages for unknown file types.
+- Shared downloads try `curl` first, fall back to `wget` when available, validate archive payloads before install, and reject obvious HTML error pages for unknown file types.
+- `download_named()` shares the same cache validation path as `download()`, so resolved asset URLs must still produce a valid payload for their file extension.
 - If `.launch/<game>.game` exists and `.launch/<game>.sh` does not, the manager creates a symlink using the repository root, even if the installer changed directories.
 
 2. **Launch flow**

linux-game-manager.sh

@@ -556,15 +556,29 @@ download() {
            ui_msgbox "Linux Game Manager" "Linux Game Manager" "Could not download \"$i\"...\n\ndownload exit codes: ${downloadAttemptExitCodes}\nError details: ${downloadErrorLog}"
            exit 1
        fi; } | ui_progressbox "Linux Game Manager" "Downloading \"$dest\" from \"$i\""
+       validate_downloaded_cache_file "${dest}"
+   done
+}
+
+validate_downloaded_cache_file() {
+    local dest="$1"
     local downloadError=0
     case "${dest##*.}" in
         "pk3"|"zip")
+            if ! (
+                set -o pipefail
                 unzip -tq "${cache}/${dest}" | ui_progressbox "Linux Game Manager" "Validating ${dest##*.} file"
-                   downloadError=$?
+            ); then
+                downloadError=1
+            fi
         ;;
         "7z")
+            if ! (
+                set -o pipefail
                 7z t "${cache}/${dest}" | ui_progressbox "Linux Game Manager" "Validating 7z file"
-                   downloadError=$?
+            ); then
+                downloadError=1
+            fi
         ;;
         "exe")
             # Check if it's a valid Windows executable by looking at the MZ header
@@ -578,7 +592,6 @@ download() {
             fi
         ;;
         *)
-               # Add HTML check for other file types
             if file -b "${cache}/${dest}" | grep -q "HTML document" ; then
                 downloadError=1
             else
@@ -586,12 +599,11 @@ download() {
             fi
         ;;
     esac
-       if [[ $downloadError -ne 0 ]]; then
+    if [[ ${downloadError} -ne 0 ]]; then
         rm -fv "${cache}/${dest}"
         alert "Linux Game Manager" "Linux Game Manager" "Error downloading \"${dest}\". Installation cannot continue."
         exit 1
     fi
-   done
 }
 
 download_named() {
@@ -614,6 +626,7 @@ download_named() {
         ui_msgbox "Linux Game Manager" "Linux Game Manager" "Could not download \"$dest\"...\n\ndownload exit codes: ${downloadAttemptExitCodes}\nError details: ${downloadErrorLog}"
         exit 1
     fi
+    validate_downloaded_cache_file "${dest}"
 }
 
 get_installer() {