diff --git a/src/app/ui/ani_controls.cpp b/src/app/ui/ani_controls.cpp
index aac1c5053..81d14e574 100644
--- a/src/app/ui/ani_controls.cpp
+++ b/src/app/ui/ani_controls.cpp
@@ -105,4 +105,12 @@ void AniControls::onPlayButton()
   }
 }
 
+void AniControls::onRightClick(Item* item)
+{
+  ButtonSet::onRightClick(item);
+
+  if (item == getItem(ACTION_PLAY) && current_editor)
+    current_editor->showAnimationSpeedMultiplierPopup();
+}
+
 } // namespace app
diff --git a/src/app/ui/ani_controls.h b/src/app/ui/ani_controls.h
index fdf78074f..cd723fd1a 100644
--- a/src/app/ui/ani_controls.h
+++ b/src/app/ui/ani_controls.h
@@ -24,6 +24,9 @@ namespace app {
 
     void updateUsingEditor(Editor* editor);
 
+  protected:
+    void onRightClick(Item* item) override;
+
   private:
     void onPlayButton();
   };
diff --git a/src/app/ui/button_set.cpp b/src/app/ui/button_set.cpp
index b4dcea942..5f38b94a9 100644
--- a/src/app/ui/button_set.cpp
+++ b/src/app/ui/button_set.cpp
@@ -110,8 +110,10 @@ bool ButtonSet::Item::onProcessMessage(ui::Message* msg)
       buttonSet()->setSelectedItem(this);
       invalidate();
 
-      if (!buttonSet()->m_triggerOnMouseUp)
+      if (static_cast<MouseMessage*>(msg)->left() &&
+          !buttonSet()->m_triggerOnMouseUp) {
         buttonSet()->onItemChange();
+      }
       break;
 
     case ui::kMouseUpMessage:
@@ -119,8 +121,13 @@ bool ButtonSet::Item::onProcessMessage(ui::Message* msg)
         releaseMouse();
         invalidate();
 
-        if (buttonSet()->m_triggerOnMouseUp)
-          buttonSet()->onItemChange();
+        if (static_cast<MouseMessage*>(msg)->left()) {
+          if (buttonSet()->m_triggerOnMouseUp)
+            buttonSet()->onItemChange();
+        }
+        else if (static_cast<MouseMessage*>(msg)->right()) {
+          buttonSet()->onRightClick(this);
+        }
       }
       break;
 
@@ -229,6 +236,11 @@ void ButtonSet::onItemChange()
   ItemChange();
 }
 
+void ButtonSet::onRightClick(Item* item)
+{
+  RightClick(item);
+}
+
 ButtonSet::Item* ButtonSet::findSelectedItem() const
 {
   for (Widget* child : getChildren()) {
diff --git a/src/app/ui/button_set.h b/src/app/ui/button_set.h
index fedc4d787..41c2eaa93 100644
--- a/src/app/ui/button_set.h
+++ b/src/app/ui/button_set.h
@@ -47,9 +47,11 @@ namespace app {
     void setTriggerOnMouseUp(bool state);
 
     Signal0<void> ItemChange;
+    Signal1<void, Item*> RightClick;
 
   protected:
     virtual void onItemChange();
+    virtual void onRightClick(Item* item);
 
   private:
     Item* findSelectedItem() const;
diff --git a/src/app/ui/editor/editor.cpp b/src/app/ui/editor/editor.cpp
index e9d5cea40..fad08ab8c 100644
--- a/src/app/ui/editor/editor.cpp
+++ b/src/app/ui/editor/editor.cpp
@@ -43,6 +43,7 @@
 #include "app/ui_context.h"
 #include "app/util/boundary.h"
 #include "base/bind.h"
+#include "base/convert_to.h"
 #include "base/unique_ptr.h"
 #include "doc/conversion_she.h"
 #include "doc/doc.h"
@@ -164,6 +165,7 @@ Editor::Editor(Document* document, EditorFlags flags)
   , m_docView(NULL)
   , m_flags(flags)
   , m_secondaryButton(false)
+  , m_aniSpeed(1.0)
 {
   // Add the first state into the history.
   m_statesHistory.push(m_state);
@@ -1561,6 +1563,31 @@ bool Editor::isPlaying() const
   return (dynamic_cast<PlayState*>(m_state.get()) != nullptr);
 }
 
+void Editor::showAnimationSpeedMultiplierPopup()
+{
+  double options[] = { 0.25, 0.5, 1.0, 1.5, 2.0, 3.0 };
+  Menu menu;
+
+  for (double option : options) {
+    MenuItem* item = new MenuItem("x" + base::convert_to<std::string>(option));
+    item->Click.connect(Bind<void>(&Editor::setAnimationSpeedMultiplier, this, option));
+    item->setSelected(m_aniSpeed == option);
+    menu.addChild(item);
+  }
+
+  menu.showPopup(ui::get_mouse_position());
+}
+
+double Editor::getAnimationSpeedMultiplier() const
+{
+  return m_aniSpeed;
+}
+
+void Editor::setAnimationSpeedMultiplier(double speed)
+{
+  m_aniSpeed = speed;
+}
+
 // static
 ImageBufferPtr Editor::getRenderImageBuffer()
 {
diff --git a/src/app/ui/editor/editor.h b/src/app/ui/editor/editor.h
index 4ca92ed63..21bab9a5a 100644
--- a/src/app/ui/editor/editor.h
+++ b/src/app/ui/editor/editor.h
@@ -194,6 +194,11 @@ namespace app {
     void stop();
     bool isPlaying() const;
 
+    // Shows a popup menu to change the editor animation speed.
+    void showAnimationSpeedMultiplierPopup();
+    double getAnimationSpeedMultiplier() const;
+    void setAnimationSpeedMultiplier(double speed);
+
     // Returns the buffer used to render editor viewports.
     // E.g. It can be re-used by PreviewCommand
     static ImageBufferPtr getRenderImageBuffer();
@@ -311,6 +316,9 @@ namespace app {
 
     bool m_secondaryButton;
 
+    // Animation speed multiplier.
+    double m_aniSpeed;
+
     static doc::ImageBufferPtr m_renderBuffer;
     static AppRender m_renderEngine;
   };
diff --git a/src/app/ui/editor/play_state.cpp b/src/app/ui/editor/play_state.cpp
index cfe0963dd..1b0ae90da 100644
--- a/src/app/ui/editor/play_state.cpp
+++ b/src/app/ui/editor/play_state.cpp
@@ -50,7 +50,7 @@ void PlayState::onAfterChangeState(Editor* editor)
   }
 
   m_toScroll = false;
-  m_nextFrameTime = editor->sprite()->frameDuration(editor->frame());
+  m_nextFrameTime = getNextFrameTime();
   m_curFrameTick = ui::clock();
   m_pingPongForward = true;
 
@@ -138,7 +138,7 @@ void PlayState::onPlaybackTick()
       m_pingPongForward);
 
     m_editor->setFrame(frame);
-    m_nextFrameTime += m_editor->sprite()->frameDuration(frame);
+    m_nextFrameTime += getNextFrameTime();
   }
 
   m_curFrameTick = ui::clock();
@@ -169,4 +169,11 @@ void PlayState::onBeforeCommandExecution(Command* command)
   m_editor->stop();
 }
 
+double PlayState::getNextFrameTime()
+{
+  return
+    m_editor->sprite()->frameDuration(m_editor->frame())
+    / m_editor->getAnimationSpeedMultiplier(); // The "speed multiplier" is a "duration divider"
+}
+
 } // namespace app
diff --git a/src/app/ui/editor/play_state.h b/src/app/ui/editor/play_state.h
index d6388c280..1d45415aa 100644
--- a/src/app/ui/editor/play_state.h
+++ b/src/app/ui/editor/play_state.h
@@ -35,13 +35,15 @@ namespace app {
     // ContextObserver
     void onBeforeCommandExecution(Command* command);
 
+    double getNextFrameTime();
+
     Editor* m_editor;
     bool m_toScroll;
     ui::Timer m_playTimer;
 
     // Number of milliseconds to go to the next frame if m_playTimer
     // is activated.
-    int m_nextFrameTime;
+    double m_nextFrameTime;
     int m_curFrameTick;
 
     bool m_pingPongForward;
diff --git a/src/app/ui/preview_editor.cpp b/src/app/ui/preview_editor.cpp
index 46ee322aa..bba5b2dfc 100644
--- a/src/app/ui/preview_editor.cpp
+++ b/src/app/ui/preview_editor.cpp
@@ -102,6 +102,8 @@ public:
 
   bool isPlaying() const { return m_isPlaying; }
 
+  Signal0<void> Popup;
+
 protected:
   void onClick(Event& ev) override
   {
@@ -143,6 +145,20 @@ protected:
       case kSetCursorMessage:
         ui::set_mouse_cursor(kArrowCursor);
         return true;
+
+      case kMouseUpMessage: {
+        MouseMessage* mouseMsg = static_cast<MouseMessage*>(msg);
+        if (mouseMsg->right()) {
+          if (hasCapture()) {
+            releaseMouse();
+            Popup();
+
+            setSelected(false);
+            return true;
+          }
+        }
+        break;
+      }
     }
 
     return SkinButton<Button>::onProcessMessage(msg);
@@ -158,6 +174,7 @@ PreviewEditorWindow::PreviewEditorWindow()
   , m_centerButton(new MiniCenterButton())
   , m_playButton(new MiniPlayButton())
   , m_refFrame(0)
+  , m_aniSpeed(1.0)
 {
   child_spacing = 0;
   setAutoRemap(false);
@@ -167,6 +184,7 @@ PreviewEditorWindow::PreviewEditorWindow()
 
   m_centerButton->Click.connect(Bind<void>(&PreviewEditorWindow::onCenterClicked, this));
   m_playButton->Click.connect(Bind<void>(&PreviewEditorWindow::onPlayClicked, this));
+  m_playButton->Popup.connect(Bind<void>(&PreviewEditorWindow::onPopupSpeed, this));
 
   addChild(m_centerButton);
   addChild(m_playButton);
@@ -265,6 +283,16 @@ void PreviewEditorWindow::onPlayClicked()
     miniEditor->stop();
 }
 
+void PreviewEditorWindow::onPopupSpeed()
+{
+  Editor* miniEditor = (m_docView ? m_docView->getEditor(): nullptr);
+  if (!miniEditor || !miniEditor->document())
+    return;
+
+  miniEditor->showAnimationSpeedMultiplierPopup();
+  m_aniSpeed = miniEditor->getAnimationSpeedMultiplier();
+}
+
 void PreviewEditorWindow::updateUsingEditor(Editor* editor)
 {
   if (!m_isEnabled || !editor) {
@@ -296,6 +324,7 @@ void PreviewEditorWindow::updateUsingEditor(Editor* editor)
     miniEditor->setLayer(editor->layer());
     miniEditor->setFrame(editor->frame());
     miniEditor->setState(EditorStatePtr(new NavigateState));
+    miniEditor->setAnimationSpeedMultiplier(m_aniSpeed);
     layout();
     center = true;
   }
diff --git a/src/app/ui/preview_editor.h b/src/app/ui/preview_editor.h
index 41f266dcb..650a60ea5 100644
--- a/src/app/ui/preview_editor.h
+++ b/src/app/ui/preview_editor.h
@@ -36,6 +36,7 @@ namespace app {
   private:
     void onCenterClicked();
     void onPlayClicked();
+    void onPopupSpeed();
     void hideWindow();
 
     bool m_isEnabled;
@@ -43,6 +44,7 @@ namespace app {
     MiniCenterButton* m_centerButton;
     MiniPlayButton* m_playButton;
     doc::frame_t m_refFrame;
+    double m_aniSpeed;
   };
 
 } // namespace app