diff --git a/.includes/gamemode.sh b/.includes/gamemode.sh
new file mode 100644
index 0000000..c305776
--- /dev/null
+++ b/.includes/gamemode.sh
@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+run_with_optional_gamemode() {
+    if command -v gamemoderun &> /dev/null; then
+        gamemoderun "$@"
+    else
+        "$@"
+    fi
+}
diff --git a/.includes/ipfs-replacements.tsv b/.includes/ipfs-replacements.tsv
new file mode 100644
index 0000000..db1eade
--- /dev/null
+++ b/.includes/ipfs-replacements.tsv
@@ -0,0 +1,4 @@
+# Replacement map for scripts/check-ipfs-links.sh --fix.
+# Format: MATCH<TAB>REPLACEMENT
+# MATCH can be the ipfs array key, such as BG 15 Puzzle, or the old CID.
+# REPLACEMENT can be a bare CID or a full /ipfs/ URL. Bare CIDs keep the existing query string.
diff --git a/.includes/proton.sh b/.includes/proton.sh
index 9e53d2b..582c5ff 100644
--- a/.includes/proton.sh
+++ b/.includes/proton.sh
@@ -97,7 +97,7 @@ run_umu_game() {
         return 1
     fi
     pushd "${exePath%/*}" > /dev/null || return 1
-    umu-run "$exePath"
+    run_with_optional_gamemode umu-run "$exePath"
     popd > /dev/null || return 1
 }
 
diff --git a/audiogame-manager.sh b/audiogame-manager.sh
index bd9c014..569f262 100755
--- a/audiogame-manager.sh
+++ b/audiogame-manager.sh
@@ -570,14 +570,14 @@ custom_launch_parameters() {
             fi
             start_nvda2speechd
             pushd "$(winepath "$winePath")" || exit 1
-            wine "$wineExec"
+            run_with_optional_gamemode wine "$wineExec"
             popd || exit 1
             customLaunchHandled="true"
             return 0
         fi
         if [[ "${game[2]}" == "Dreamland" ]]; then
             start_nvda2speechd
-            "$WINE" "${game[1]}" &> /dev/null
+            run_with_optional_gamemode "$WINE" "${game[1]}" &> /dev/null
             customLaunchHandled="true"
             return 0
         fi
@@ -637,20 +637,20 @@ custom_launch_parameters() {
         # sketchbook: DLL replacement now handled by update_nvda_dlls()
         if [[ "${game[2]}" == "Audiodisc" ]]; then
             start_nvda2speechd
-            wine "$winePath\\$wineExec"
+            run_with_optional_gamemode wine "$winePath\\$wineExec"
             customLaunchHandled="true"
             return 0
         fi
         if [[ "${game[2]}" == "Audioquake" ]]; then
             start_nvda2speechd
-            wine "$winePath\\$wineExec"
+            run_with_optional_gamemode wine "$winePath\\$wineExec"
             customLaunchHandled="true"
             return 0
         fi
         if [[ "${game[2]}" == "Screaming Strike 2" ]]; then
             start_nvda2speechd
             pushd "$(winepath "$winePath")" || exit 1
-            wine "$wineExec"
+            run_with_optional_gamemode wine "$wineExec"
             popd || exit 1
             customLaunchHandled="true"
             return 0
@@ -658,7 +658,7 @@ custom_launch_parameters() {
         if [[ "${game[2]}" == "Warsim" ]]; then
             start_nvda2speechd
             pushd "$(winepath "${game[1]%\\*}")" || exit 1
-            wine "${game[1]##*\\}"
+            run_with_optional_gamemode wine "${game[1]##*\\}"
             popd || exit 1
             customLaunchHandled="true"
             return 0
@@ -666,7 +666,7 @@ custom_launch_parameters() {
         if [[ "${game[2]}" == "Interceptor" ]]; then
             start_nvda2speechd
             pushd "$(winepath "$winePath")" || exit 1
-            wine "$wineExec"
+            run_with_optional_gamemode wine "$wineExec"
             popd || exit 1
             customLaunchHandled="true"
             return 0
@@ -849,11 +849,11 @@ game_launcher() {
         # Change to game directory before launching (required for proper game operation)
         pushd "$(winepath "${game[1]%\\*}")" > /dev/null || exit 1
         if [[ "$debugGdb" == "1" ]]; then
-            winedbg --gdb "${game[1]##*\\}"
+            run_with_optional_gamemode winedbg --gdb "${game[1]##*\\}"
         else
             # Use direct wine execution instead of 'wine start' to ensure clipboard works
             # See: https://bugs.winehq.org/show_bug.cgi?id=50598
-            wine "${game[1]##*\\}"
+            run_with_optional_gamemode wine "${game[1]##*\\}"
         fi
         popd > /dev/null || exit 1
         restore_executioners_rage_focus_workaround
@@ -926,6 +926,8 @@ export ipfsGateway="${ipfsGateway:-https://ipfs.stormux.org}"
 # Source helper functions
 # shellcheck source=.includes/bottle.sh
 source "${scriptDir}/.includes/bottle.sh" # Also sourced in functions that need it
+# shellcheck source=.includes/gamemode.sh
+source "${scriptDir}/.includes/gamemode.sh"
 # shellcheck source=.includes/proton.sh
 source "${scriptDir}/.includes/proton.sh"
 # shellcheck source=.includes/desktop.sh
diff --git a/tests/umu_backend_tests.sh b/tests/umu_backend_tests.sh
index 09b41b4..ab721cc 100644
--- a/tests/umu_backend_tests.sh
+++ b/tests/umu_backend_tests.sh
@@ -30,6 +30,13 @@ fi
 STUB
 chmod +x "${testRoot}/bin/umu-run"
 
+cat > "${testRoot}/bin/gamemoderun" <<'STUB'
+#!/usr/bin/env bash
+printf '%s\n' "$*" >> "$GAMEMODE_STUB_LOG"
+exec "$@"
+STUB
+chmod +x "${testRoot}/bin/gamemoderun"
+
 cat > "${testRoot}/bin/wine" <<'STUB'
 #!/usr/bin/env bash
 if [[ "${1:-}" == "winepath" || "${1:-}" == "winepath.exe" ]]; then
@@ -55,7 +62,10 @@ chmod +x "${testRoot}/bin/wineserver"
 export PATH="${testRoot}/bin:$PATH"
 export UMU_STUB_LOG="${testRoot}/umu.log"
 export WINE_STUB_LOG="${testRoot}/wine.log"
+export GAMEMODE_STUB_LOG="${testRoot}/gamemode.log"
 
+# shellcheck source=.includes/gamemode.sh
+source "${repoRoot}/.includes/gamemode.sh"
 # shellcheck source=.includes/proton.sh
 source "${repoRoot}/.includes/proton.sh"
 
@@ -106,6 +116,7 @@ test_run_umu_game_uses_converted_path() {
     mkdir -p "${WINEPREFIX}/drive_c/Program Files (x86)/GalaxyLaboratory/ShadowRine_FullVoice"
     touch "${WINEPREFIX}/drive_c/Program Files (x86)/GalaxyLaboratory/ShadowRine_FullVoice/play_sr.exe"
     run_umu_game 'c:\Program Files (x86)\GalaxyLaboratory\ShadowRine_FullVoice\play_sr.exe'
+    assert_file_contains "$GAMEMODE_STUB_LOG" "umu-run ${WINEPREFIX}/drive_c/Program Files (x86)/GalaxyLaboratory/ShadowRine_FullVoice/play_sr.exe" "UMU launches through GameMode"
     assert_file_contains "$UMU_STUB_LOG" "${WINEPREFIX}|shadow-line|none|${WINEPREFIX}/drive_c/Program Files (x86)/GalaxyLaboratory/ShadowRine_FullVoice/play_sr.exe" "UMU launches converted exe path"
 }