diff --git a/rogueviz/hypcity.cpp b/rogueviz/hypcity.cpp
index ad21e0a9..4e3505b8 100644
--- a/rogueviz/hypcity.cpp
+++ b/rogueviz/hypcity.cpp
@@ -99,6 +99,62 @@ void enable() {
   add_model_settings();
   }
 
-auto hypcity_ah = arg::add3("-hypcity", enable);
+auto hypcity_ah = arg::add3("-hypcity", enable)
++ addHook(tour::ss::hooks_extra_slideshows, 120, [] (tour::ss::slideshow_callback cb) {
+
+    using namespace rogueviz::pres;
+    static vector<slide> hypcity_slides;
+
+    if(hypcity_slides.empty()) {
+      hypcity_slides.emplace_back(
+        slide{"Introduction", 999, LEGAL::NONE, 
+          "Here we put a 3D model of a city into various geometries. Don't forget to try changing RogueViz projection and view range settings!\n\n"
+          "Model by Emile Johansson, downloaded from: https://sketchfab.com/3d-models/night-city-p2-82637933a7cb4fafadb0e2a79415c438\n\n"
+          "Thanks to Nico Belmonte for the idea of using this model.\n\n"
+          "Remember to try different projections (press '1')!"
+          ,
+          [] (presmode mode) {}
+          });
+      
+      auto add = [&] (string s, string text, int dim, reaction_t setter) {
+        hypcity_slides.emplace_back(
+          tour::slide{s, 100, LEGAL::NONE | QUICKGEO, text,
+            [=] (presmode mode) {
+              if(mode == pmStart && dim == 2 && !vid.always3) {
+                geom3::switch_fpp();
+                }
+              setCanvas(mode, '0');
+              if(mode == pmStart) {
+                // slide_backup(canvas_default_wall, waInvisibleFloor);
+                if(dim == 2) slide_backup(vid.camera, 0);
+                if(dim == 2) slide_backup(vid.depth, 0);
+                slide_backup(context_fog, false);
+                setter();
+                start_game();
+                enable();
+                }
+              }});
+        };
+      
+      add("hyperbolic", "Hyperbolic geometry.", 2, [] {
+        set_geometry(g45);
+        gp::param = {1, 1};
+        set_variation(eVariation::unrectified);
+        });
+      add("spherical", "Spherical geometry.", 2, [] {
+        set_geometry(gSmallSphere);
+        set_variation(eVariation::pure);
+        });
+      add("Nil", "Nil geometry.", 3, [] {
+        set_geometry(gNil);
+        });
+      add("Solv", "Solv geometry.", 3, [] {
+        set_geometry(gSol);
+        });
+      add_end(hypcity_slides);
+      }
+
+    cb(XLAT("non-Euclidean city"), &hypcity_slides[0], 'c');
+    });
 
 }}