diff --git a/rogueviz/ads/ads-game.cpp b/rogueviz/ads/ads-game.cpp
index b3458830..ac835c30 100644
--- a/rogueviz/ads/ads-game.cpp
+++ b/rogueviz/ads/ads-game.cpp
@@ -85,6 +85,7 @@ void restart() {
 
   paused = false;
   ship_pt = 0;
+  no_param_change = all_params_default();
   init_gamedata();
   }
 
diff --git a/rogueviz/ads/control.cpp b/rogueviz/ads/control.cpp
index d50e1c4a..c4849596 100644
--- a/rogueviz/ads/control.cpp
+++ b/rogueviz/ads/control.cpp
@@ -153,12 +153,13 @@ ld read_movement() {
 bool ads_turn(int idelta) {
   multi::handleInput(idelta, multi::scfg_default);
   ld delta = idelta / 1000.;
-  
+
   if(!(cmode & sm::NORMAL)) return false;
-  
+
   hybrid::in_actual([&] {
 
   handle_crashes();
+  if(no_param_change && !all_params_default()) no_param_change = false;
 
   auto& act = multi::action_states[1];
 
diff --git a/rogueviz/ads/ds-game.cpp b/rogueviz/ads/ds-game.cpp
index 2cab43b5..1df4c3ba 100644
--- a/rogueviz/ads/ds-game.cpp
+++ b/rogueviz/ads/ds-game.cpp
@@ -345,6 +345,7 @@ bool ds_turn(int idelta) {
   if(!(cmode & sm::NORMAL)) return false;
 
   ds_handle_crashes();
+  if(no_param_change && !all_params_default()) no_param_change = false;
 
   auto& act = multi::action_states[1];
 
@@ -396,7 +397,7 @@ bool ds_turn(int idelta) {
     if(mshift) {
       #if RVCOL
       constexpr ld win_time = 60;
-      if(current.shift < win_time && (current.shift + mshift) >= win_time && !game_over && all_params_default())
+      if(current.shift < win_time && (current.shift + mshift) >= win_time && !game_over && no_param_change)
         rogueviz::rv_achievement("DSGAME");
       #endif
       current.shift += mshift;
@@ -741,6 +742,7 @@ void ds_restart() {
     }
 
   ship_pt = 0;
+  no_param_change = all_params_default();
 
   rocks.clear();
   history.clear();
diff --git a/rogueviz/ads/globals.cpp b/rogueviz/ads/globals.cpp
index 89442fcb..6de87f28 100644
--- a/rogueviz/ads/globals.cpp
+++ b/rogueviz/ads/globals.cpp
@@ -251,6 +251,8 @@ string get_main_help();
 int generate_mouseovers();
 
 bool all_params_default();
+bool no_param_change;
+bool params_changed();
 
 void start_relhell_tour();
 
diff --git a/rogueviz/ads/hiscore.cpp b/rogueviz/ads/hiscore.cpp
index 168c5314..e6b9d54d 100644
--- a/rogueviz/ads/hiscore.cpp
+++ b/rogueviz/ads/hiscore.cpp
@@ -66,9 +66,9 @@ void game_over_with_message(const string& reason) {
   if(pdata.ammo <= 0) cur.deathreason += " while out of ammo";
   game_over = true;
   #if RVCOL
-  if(main_rock && all_params_default())
+  if(main_rock && no_param_change)
     rogueviz::rv_leaderboard("de Sitter", current.shift * 1000, 1, rvlc::ms);
-  if(!main_rock && all_params_default()) {
+  if(!main_rock && no_param_change) {
     auto& s = pdata.score;
     string data = lalign(0, s[0], " ", s[1], " ", s[2]);
     rogueviz::rv_leaderboard("anti de Sitter: total score", s[0] + s[1] + s[2], 1, rvlc::num, data);
diff --git a/rogueviz/ads/menu.cpp b/rogueviz/ads/menu.cpp
index d1932460..fef614ef 100644
--- a/rogueviz/ads/menu.cpp
+++ b/rogueviz/ads/menu.cpp
@@ -81,8 +81,11 @@ void edit_difficulty() {
       });
     }
 
-  dialog::addBoolItem(XLAT("all default"), all_params_default(), 'D');
-  dialog::add_action([] { all_params_reset(); restart(); });
+  bool pa = all_params_default();
+  dialog::addSelItem(XLAT("all default"),
+    (pa && !no_param_change) ? XLAT("PARTIAL") : ONOFF(pa), 'd');
+  if(pa)
+    dialog::add_action([] { all_params_reset(); restart(); });
 
   dialog::addBack();
   dialog::display();
diff --git a/rogueviz/ads/resources.cpp b/rogueviz/ads/resources.cpp
index cb3b8aad..cb09011a 100644
--- a/rogueviz/ads/resources.cpp
+++ b/rogueviz/ads/resources.cpp
@@ -201,7 +201,7 @@ void gain_resource(eResourceType rsrc) {
   for(auto r: {rtGoldGate, rtGoldRocks, rtGoldTurret}) {
     D(r, score[treasure_id(r)])
     #ifdef RVCOL
-    if(pdata.score[0] + pdata.score[1] + pdata.score[2] == 30 && all_params_default()) rogueviz::rv_achievement("ADSGAME");
+    if(pdata.score[0] + pdata.score[1] + pdata.score[2] == 30 && no_param_change) rogueviz::rv_achievement("ADSGAME");
     #endif
     }
   playSound(nullptr, rsrc_sound[rsrc]);