diff --git a/achievement.cpp b/achievement.cpp
index 8699ca02..3963daaf 100644
--- a/achievement.cpp
+++ b/achievement.cpp
@@ -125,7 +125,6 @@ EX bool wrongMode(char flags) {
   if(yendor::on) return true;
   if(peace::on) return true;
   if(tactic::on) return true;
-  if(dpgen::in) return true;
 #if CAP_TOUR
   if(tour::on) return true;
 #endif
diff --git a/hyper.cpp b/hyper.cpp
index 5184ce25..d0c988ec 100644
--- a/hyper.cpp
+++ b/hyper.cpp
@@ -121,7 +121,6 @@
 #include "bigstuff.cpp"
 #include "multigame.cpp"
 #include "inforder.cpp"
-#include "dpgen.cpp"
 #include "vr.cpp"
 #include "intra.cpp"
 
diff --git a/monstergen.cpp b/monstergen.cpp
index f69dc222..f9538a60 100644
--- a/monstergen.cpp
+++ b/monstergen.cpp
@@ -327,7 +327,6 @@ EX void wandering() {
   if(!canmove) return;
   if(!gen_wandering) return;
   if(racing::on) return;
-  if(dpgen::in) return;
   if(items[itOrbSafety]) return;
   pathdata pd(moYeti);
   int seepcount = getSeepcount();
diff --git a/multigame.cpp b/multigame.cpp
index 34dfd0c2..6373734a 100644
--- a/multigame.cpp
+++ b/multigame.cpp
@@ -136,6 +136,8 @@ EX namespace dual {
   
   hyperpoint which_dir;
   
+  EX purehookset hooks_after_move;
+  
   int remap_direction(int d, int cg) {
     if(WDIM == 2 || cg == currently_loaded) return d;
     
@@ -247,7 +249,7 @@ EX namespace dual {
       switch_to(1); forcedmovetype = fm; movepcto(0, subdir, false); forcedmovetype = fmSkip;
       switch_to(cg);
       reduceOrbPowers();
-      dpgen::check();  
+      callhooks(hooks_after_move);
       return true;
       }
     addMessage(XLAT("Impossible."));
diff --git a/dpgen.cpp b/rogueviz/dpgen.cpp
similarity index 87%
rename from dpgen.cpp
rename to rogueviz/dpgen.cpp
index 879c151c..3fd0bb28 100644
--- a/dpgen.cpp
+++ b/rogueviz/dpgen.cpp
@@ -5,7 +5,7 @@
  *  \brief dual geometry puzzle generator
  */
 
-#include "hyper.h"
+#include "rogueviz.h"
 
 namespace hr {
 
@@ -58,6 +58,8 @@ void solve(cpos at) {
 
 int last_elimit, last_hlimit;
 
+void check();
+
 void launch(int seed, int elimit, int hlimit) {
 
   /* setup */
@@ -159,6 +161,10 @@ void launch(int seed, int elimit, int hlimit) {
 
   worst.first->wall = waOpenPlate;
   worst.second->wall = waOpenPlate;
+  rogueviz::rv_hook(dual::hooks_after_move, 100, dpgen::check);
+  bool b = gen_wandering;
+  rogueviz::on_cleanup_or_next([b] { gen_wandering = b; });
+  gen_wandering = false;
   }
 
 struct puzzle {
@@ -260,7 +266,21 @@ auto sbhook = addHook(hooks_args, 100, [] {
   return 0;
   }) + addHook(hooks_o_key, 91, [] (o_funcs& v) {
     if(in) v.push_back(named_dialog(XLAT("select a puzzle"), show_menu));
-    });
+    })
+  + addHook_rvslides(205, [] (string s, vector<tour::slide>& v) {
+      if(s != "mixed") return;
+      v.push_back(tour::slide{
+        "dual geometry puzzle", 10, tour::LEGAL::NONE | tour::QUICKSKIP | tour::QUICKGEO,
+        "Move both characters to marked squares at once!\n"
+        ,
+        [] (tour::presmode mode) {
+          slide_action(mode, 'r', "launch the dual geometry puzzle", [] {
+            pushScreen(show_menu);
+            });
+          }
+        });
+      })
+    ;
 #endif
 
 EX }
diff --git a/system.cpp b/system.cpp
index afbc6f70..edad6f6e 100644
--- a/system.cpp
+++ b/system.cpp
@@ -376,7 +376,6 @@ EX void initgame() {
     truelotus = 0;
     asteroids_generated = 0;
     asteroid_orbs_generated = 0;
-    dpgen::in = false;
     survivalist = true;
     #if CAP_CRYSTAL
     crystal::used_compass_inside = false;
@@ -1022,7 +1021,6 @@ EX void saveStats(bool emergency IS(false)) {
   if(randomPatternsMode) return;
   if(daily::on) return;
   if(peace::on) return;
-  if(dpgen::in) return;
   if(experimental) return;
 
   if(!gold() && !racing::on) return;