diff --git a/rogueviz/ads/ads-game.cpp b/rogueviz/ads/ads-game.cpp
index f975ca51..5a3df9ef 100644
--- a/rogueviz/ads/ads-game.cpp
+++ b/rogueviz/ads/ads-game.cpp
@@ -110,6 +110,8 @@ auto shot_hooks =
     -> editable("automatically rotate the projection", 'a');
     param_f(simspeed, "ads_game_simspeed")
     -> editable(0, 2*TAU, TAU/4, "game speed", "Controls the speed of the game.", 's');
+    param_f(scale, "ads_game_scale")
+    -> editable(0, 2, 0.1, "game scale", "Controls the scaling of game objects.", 'c');
     param_f(accel, "ads_game_accel")
     -> editable(0, 30, 1, "acceleration", "Controls the speed of your ship's acceleration.", 'a');
     param_f(time_unit, "ads_time_unit")
diff --git a/rogueviz/ads/display.cpp b/rogueviz/ads/display.cpp
index 28e1759e..7d97741c 100644
--- a/rogueviz/ads/display.cpp
+++ b/rogueviz/ads/display.cpp
@@ -108,7 +108,7 @@ void draw_game_cell(cell *cs, ads_matrix V, ld plev) {
     auto& shape = *rock.shape;
     for(int i=0; i<isize(shape); i += 2) {
       hybrid::in_actual([&]{
-        auto h = V * rock.at * rots::uxpush(shape[i]) * rots::uypush(shape[i+1]);
+        auto h = V * rock.at * rots::uxpush(shape[i] * scale) * rots::uypush(shape[i+1] * scale);
         cross_result f = cross0(current * h);
         rock.pts.push_back(f);
         });
@@ -142,7 +142,7 @@ void draw_game_cell(cell *cs, ads_matrix V, ld plev) {
     auto& shape = shape_ship;
     for(int i=0; i<isize(shape); i += 2) {
       hybrid::in_actual([&]{
-        auto h = V * rock.at * rgpushxto0(normalize(hyperpoint(shape[i], shape[i+1], 1, 0)));
+        auto h = V * rock.at * rgpushxto0(normalize(hyperpoint(shape[i] * scale, shape[i+1] * scale, 1, 0)));
         pts.push_back(cross0(current * h).h);
         });
       }
diff --git a/rogueviz/ads/globals.cpp b/rogueviz/ads/globals.cpp
index ebcaf81d..e63a2aa2 100644
--- a/rogueviz/ads/globals.cpp
+++ b/rogueviz/ads/globals.cpp
@@ -62,6 +62,9 @@ void restart();
 /** all the missiles and objects currently displayed */
 vector<struct ads_object*> displayed;
 
+/** how much should be the objects scaled */
+ld scale = 1;
+
 color_t missile_color = 0xFF0000FF;
 
 bool game_over;
diff --git a/rogueviz/ads/map.cpp b/rogueviz/ads/map.cpp
index 17d7e7bb..047a2647 100644
--- a/rogueviz/ads/map.cpp
+++ b/rogueviz/ads/map.cpp
@@ -255,7 +255,7 @@ void handle_crashes() {
         }
       }
     if(!game_over) for(int i=0; i<isize(shape_ship); i+=2) {
-      hyperpoint h = spin(ang*degree) * hpxyz(shape_ship[i], shape_ship[i+1], 1);
+      hyperpoint h = spin(ang*degree) * hpxyz(shape_ship[i] * scale, shape_ship[i+1] * scale, 1);
       for(auto r: rocks) {
         if(pointcrash(h, r->pts)) crash_ship();
         }
diff --git a/rogueviz/ads/shapes.cpp b/rogueviz/ads/shapes.cpp
index 231b39b0..8306f363 100644
--- a/rogueviz/ads/shapes.cpp
+++ b/rogueviz/ads/shapes.cpp
@@ -3,7 +3,7 @@ namespace hr {
 namespace ads_game {
 
 hpcshape shShip;
-bool made;
+ld made_scale = -1;
 
 vector<ld> shape_rock = { -0.0176894, 0.0952504,  0.0278998, 0.0966286,  0.0686721, 0.0455547,  0.110983, 0.0122558,  0.0994024, -0.0483395,  0.0517039, -0.0802772,  -0.00271848, -0.0706804,  -0.0564861, -0.08575,  -0.100087, -0.0483411,  -0.100031, -0.0102072,  -0.0761486, 0.0292356,  -0.0639653, 0.077575 };
 vector<ld> shape_rock2 = {-0.00204264, 0.111665, 0.0374777, 0.119247, 0.0797168, 0.0940249, 0.106214, 0.0326813, 0.121954, -0.0109009, 0.0837905, -0.0865154, 0.0517718, -0.108312, 0.00135972, -0.0802237, -0.0632991, -0.0837181, -0.0980407, -0.0510629, -0.122639, 0.00885725, -0.0817448, 0.0878757, };
@@ -17,13 +17,13 @@ vector<ld> shape_airtank = {-0.101054, 0.0134738, -0.0904219, 0.014429, -0.07790
 vector<ld> shape_ship = { 0.0699706, 0, 0.0509304, 0.019032, 0.0056909, 0.023788, 0.0318813, 0.0309258, 0.0330715, 0.0368693, 0.00331668, 0.0380512, -0.0630665, 0.0699568, -0.0619577, 0.041535, -0.0678691, 0.0415233, -0.0678946, 0.0261072, -0.0572505, 0.0237463, -0.0572505, -0.0237463, -0.0678946, -0.0261072, -0.0678691, -0.0415233, -0.0619577, -0.041535, -0.0630665, -0.0699568, 0.00331668, -0.0380512, 0.0330715, -0.0368693, 0.0318813, -0.0309258, 0.0056909, -0.023788, 0.0509304, -0.019032 };
 
 void make_shape() {
-  if(made) return;
-  made = true;
+  if(made_scale == scale) return;
+  made_scale = scale;
   cgi.bshape(shShip, PPR::MONSTER_BODY);
   int N = isize(shape_ship);
 
   vector<hyperpoint> lst;
-  for(int i=0; i<N; i += 2) lst.push_back(normalize(hpxyz(shape_ship[i], shape_ship[i+1], 1)));
+  for(int i=0; i<N; i += 2) lst.push_back(normalize(hpxyz(shape_ship[i] * scale, shape_ship[i+1] * scale, 1)));
   for(auto h: lst) cgi.hpcpush(h);
   cgi.hpcpush(lst[0]);
   cgi.finishshape();