diff --git a/rogueviz/highdim-demo.cpp b/rogueviz/highdim-demo.cpp
index df2de4bc..5540bb10 100644
--- a/rogueviz/highdim-demo.cpp
+++ b/rogueviz/highdim-demo.cpp
@@ -248,6 +248,7 @@ void sync(int mode, flagtype flags) {
     vid.use_smart_range = 2;
     crystal::view_coordinates = (flags & VC);
     smooth_scrolling = true;
+    tour::slide_backup(game_keys_scroll, true);
     }
   if(mode == pmKey && !(flags & NO_VC))
     crystal::view_coordinates = !crystal::view_coordinates;
@@ -404,6 +405,7 @@ auto explore_structure(int _shapeid) {
     if(mode == pmStart) {
       tour::slide_backup(mapeditor::drawplayer, false);
       tour::slide_backup(smooth_scrolling, true);
+      tour::slide_backup(game_keys_scroll, true);
       stop_game();
       set_geometry(geometry == gCrystal534 ? gCrystal534 : gCrystal344);
       enable_canvas();
diff --git a/rogueviz/hypcity.cpp b/rogueviz/hypcity.cpp
index 37d4a5cc..dc4ac19f 100644
--- a/rogueviz/hypcity.cpp
+++ b/rogueviz/hypcity.cpp
@@ -124,10 +124,8 @@ auto hypcity_ah = arg::add3("-hypcity", enable)
                 geom3::switch_fpp();
                 }
               setCanvas(mode, '0');
-              slide_backup(mapeditor::drawplayer, false);
               if(mode == pmStart) {
                 slide_backup(canvas_default_wall, waInvisibleFloor);
-                slide_backup(smooth_scrolling, 1);
                 if(dim == 2) slide_backup(vid.camera, 0);
                 if(dim == 2) slide_backup(vid.depth, 0);
                 slide_backup(context_fog, false);
@@ -135,6 +133,7 @@ auto hypcity_ah = arg::add3("-hypcity", enable)
                 start_game();
                 enable();
                 }
+              non_game_slide_scroll(mode);
               }});
         };
       
diff --git a/rogueviz/intra-demos.cpp b/rogueviz/intra-demos.cpp
index 9e0524bf..5fc1e2de 100644
--- a/rogueviz/intra-demos.cpp
+++ b/rogueviz/intra-demos.cpp
@@ -489,15 +489,12 @@ auto hooks =
     auto load = [] (string s, ld x, int y) {
       return [s, x, y] {
         slide_backup(vid.cells_drawn_limit, 100);
-        slide_backup(smooth_scrolling, true);
         slide_backup(ray::max_cells, 999999);
         slide_backup(walking::on, true);
         slide_backup(walking::eye_level, x);
         mapstream::loadMap(s);
         slide_backup(ray::fixed_map, true);
         slide_backup(ray::max_iter_intra, y);
-        slide_backup(mapeditor::drawplayer, false);
-        slide_backup(playermoved, false);
         #if CAP_VR
         slide_backup(vrhr::hsm, vrhr::eHeadset::holonomy);
         slide_backup(vrhr::eyes, vrhr::eEyes::truesim);
@@ -518,6 +515,7 @@ auto hooks =
           slide_action(mode, 'r', "run this visualization", loader);
           slidecommand = "portal options";
           if(mode == tour::pmKey) pushScreen(intra::show_portals);
+          rogueviz::pres::non_game_slide_scroll(mode);
           }
         });
       };
diff --git a/rogueviz/noniso-honeycombs.cpp b/rogueviz/noniso-honeycombs.cpp
index b6ec73d5..123595f9 100644
--- a/rogueviz/noniso-honeycombs.cpp
+++ b/rogueviz/noniso-honeycombs.cpp
@@ -12,8 +12,6 @@ auto geoslide(eGeometry g, char canvas, int jhole, int jblock) {
   using namespace tour;
   return [=] (presmode mode) {
     if(mode == pmStart) {
-      tour::slide_backup(mapeditor::drawplayer, false);
-      tour::slide_backup(smooth_scrolling, true);
       stop_game();
       set_geometry(g);
       if(g == gSphere) {
@@ -39,6 +37,7 @@ auto geoslide(eGeometry g, char canvas, int jhole, int jblock) {
         sightranges[gSol] = 4;
         }
       }
+    rogueviz::pres::non_game_slide_scroll(mode);
     if(mode == pmStop && jblock < 0)
       pmodel = mdGeodesic;
     slidecommand = "switch raycaster";
diff --git a/rogueviz/notknot.cpp b/rogueviz/notknot.cpp
index fac3e6ff..025b1bdb 100644
--- a/rogueviz/notknot.cpp
+++ b/rogueviz/notknot.cpp
@@ -1400,6 +1400,7 @@ void nk_launch() {
   sightranges[geometry] = .5;
   ray::max_cells = 600000;
   smooth_scrolling = 1;
+  game_keys_scroll = true;
   camera_speed = 10;
   // panini_alpha = 1;
   // fov = 150;
@@ -1438,19 +1439,18 @@ void portal_slideshow(tour::ss::slideshow_callback cb) {
             setCanvas(mode, '0');
             if(youtube != "")
               slide_url(mode, 'y', "YouTube link", youtube);
+            non_game_slide_scroll(mode);
             slide_action(mode, 'r', "run", [=] {
               slide_backup(margin);
               slide_backup(mapeditor::drawplayer);
               slide_backup(firstland);
               slide_backup(specialland);
               slide_backup(ray::max_cells, 600000);
-              slide_backup(smooth_scrolling, 1);
               slide_backup(camera_speed, 10);
               slide_backup(ray::exp_decay_poly, 30);
               slide_backup(ray::fixed_map, true);
               slide_backup(ray::max_iter_iso, 80);
               slide_backup(vid.cells_drawn_limit, 100);
-              slide_backup(mapeditor::drawplayer, false);
         #if CAP_VR
               slide_backup(vrhr::hsm);
               slide_backup(vrhr::eyes);
diff --git a/rogueviz/playing-with-impossibility.cpp b/rogueviz/playing-with-impossibility.cpp
index 65005a3d..2d94969d 100644
--- a/rogueviz/playing-with-impossibility.cpp
+++ b/rogueviz/playing-with-impossibility.cpp
@@ -819,7 +819,6 @@ slide dmv_slides[] = {
       ply_slide(mode, gCubeTiling, mdPerspective, false);
       if(!ply::staircase.available()) return;
       if(mode == pmStart) {
-        tour::slide_backup(smooth_scrolling, true);
         tour::slide_backup(sightranges[geometry], 200);
         tour::slide_backup(vid.cells_drawn_limit, 200);
         tour::slide_backup(camera_speed, 5);
@@ -831,6 +830,7 @@ slide dmv_slides[] = {
 
         // tour::slide_backup(vid.fov, 120);
         }
+      non_game_slide_scroll(mode);
       if(mode == pmKey) {
         println(hlog, ggmatrix(currentmap->gamestart()));
         println(hlog, View);
@@ -923,12 +923,10 @@ slide dmv_slides[] = {
         set_geometry(gNil);
         start_game();
         rogueviz::rv_hook(hooks_drawcell, 100, rogueviz::nilcompass::draw_compass);
-        tour::slide_backup(smooth_scrolling, true);
-        tour::slide_backup(mapeditor::drawplayer, false);
         View = Id;
         shift_view(ztangent(.5));
-        playermoved = false;
         }
+      non_game_slide_scroll(mode);
       if(mode == pmStart || mode == pmKey)
         rogueviz::nilcompass::zeroticks = ticks;
       }
@@ -1205,15 +1203,13 @@ slide dmv_slides[] = {
     if(mode == pmStart) {
       stop_game();
       set_geometry(gNil);
-      tour::slide_backup(mapeditor::drawplayer, false);
       rogueviz::cylon::enable();
-      tour::slide_backup(smooth_scrolling, true);
       tour::on_restore(nilv::set_flags);
       tour::slide_backup(nilv::nilperiod, make_array(3, 3, 3));
       nilv::set_flags();
       start_game();
-      playermoved = false;
       }
+    non_game_slide_scroll(mode);
     }},
 
   {"3D model (geodesic)", 999, LEGAL::NONE | QUICKGEO, 
@@ -1263,15 +1259,13 @@ slide dmv_slides[] = {
         set_geometry(gNil);
         check_cgi();
         cgi.require_shapes();
-        tour::slide_backup(mapeditor::drawplayer, false);
-        tour::slide_backup(smooth_scrolling, true);
         start_game();
         rogueviz::balls::initialize(1);
         rogueviz::balls::balls.resize(3);
         pmodel = mdEquidistant;
-        playermoved = false;
         View = cspin(1, 2, M_PI/2);
         }
+      non_game_slide_scroll(mode);
       }
     },
 
diff --git a/rogueviz/presentation.cpp b/rogueviz/presentation.cpp
index 9d71e327..c555af08 100644
--- a/rogueviz/presentation.cpp
+++ b/rogueviz/presentation.cpp
@@ -87,6 +87,11 @@ void non_game_slide(presmode mode) {
   no_other_hud(mode);
   }
 
+void non_game_slide_scroll(presmode mode) {
+  non_game_slide(mode);
+  slide_backup(smooth_scrolling, true);
+  }
+
 void white_screen(presmode mode, color_t col) {
   if(mode == pmStart) {
     tour::slide_backup(backcolor, col);
diff --git a/rogueviz/qtm.cpp b/rogueviz/qtm.cpp
index e435f50d..a3b6d5f0 100644
--- a/rogueviz/qtm.cpp
+++ b/rogueviz/qtm.cpp
@@ -218,11 +218,11 @@ auto hooks =
               slide_backup(ray::max_cells, 32768);
               slide_backup(ray::fixed_map, true);
               #endif
-              slide_backup(smooth_scrolling, true);
               slide_backup(camera_speed, .1);
               enable();
               start_game();
               }
+            rogueviz::pres::non_game_slide_scroll(mode);
             if(mode == pmKey)
               edit_stretch();
             }});
@@ -245,11 +245,11 @@ auto hooks =
               slide_backup(ray::fixed_map, true);
               slide_backup(ray::want_use, 2);
               #endif
-              slide_backup(smooth_scrolling, true);
               slide_backup(camera_speed, .1);
               enable();
               start_game();
               }
+            rogueviz::pres::non_game_slide_scroll(mode);
             if(mode == pmKey)
               edit_stretch();
             }});
diff --git a/rogueviz/rogueviz.h b/rogueviz/rogueviz.h
index 3f3c6c1b..454a40b9 100644
--- a/rogueviz/rogueviz.h
+++ b/rogueviz/rogueviz.h
@@ -230,6 +230,7 @@ function<void(presmode)> roguevizslide_action(char c, const T& t, const U& act)
   void compare_projections(presmode mode, eModel a, eModel b);
   void no_other_hud(presmode mode);
   void non_game_slide(presmode mode);
+  void non_game_slide_scroll(presmode mode);
   void white_screen(presmode mode, color_t col = 0xFFFFFFFF);
   void empty_screen(presmode mode, color_t col = 0xFFFFFFFF);
   void show_picture(presmode mode, string s);    
diff --git a/rogueviz/snow.cpp b/rogueviz/snow.cpp
index f2f83fe0..6751315d 100644
--- a/rogueviz/snow.cpp
+++ b/rogueviz/snow.cpp
@@ -192,15 +192,13 @@ void snow_slide(vector<tour::slide>& v, string title, string desc, reaction_t t)
     
     if(mode == pmStart) {
       stop_game();
-      tour::slide_backup(mapeditor::drawplayer, false);
       tour::slide_backup<ld>(snow_lambda, 1);
       tour::slide_backup(snow_color, 0xC0C0C0FF);
       tour::slide_backup(snow_intense, true);
-      tour::slide_backup(smooth_scrolling, true);
       t();
       start_game();
-      playermoved = false;
       }
+    rogueviz::pres::non_game_slide_scroll(mode);
     }}
     );
   }
diff --git a/rogueviz/triangle.cpp b/rogueviz/triangle.cpp
index fac15c65..33311f60 100644
--- a/rogueviz/triangle.cpp
+++ b/rogueviz/triangle.cpp
@@ -504,10 +504,8 @@ void slide_itri(tour::presmode mode, int id) {
   if(mode == pmStart) {
     stop_game();
     set_geometry(gNil);
-    tour::slide_backup(mapeditor::drawplayer, false);
     tour::slide_backup(on, true);
     tour::slide_backup(net, id == 2 ? true : false);
-    tour::slide_backup(smooth_scrolling, true);
     tour::on_restore(nilv::set_flags);
     if(id == 0)
       tour::slide_backup(nilv::nilperiod, make_array(3, 3, 3));
@@ -524,6 +522,7 @@ void slide_itri(tour::presmode mode, int id) {
     playermoved = false;
     tour::on_restore(reset);
     }     
+  rogueviz::pres::non_game_slide_scroll(mode);
   }
 
 string cap = "Impossible architecture in Nil/";