diff --git a/game/gui.rpy b/game/gui.rpy
index 858ef3f..c608675 100644
--- a/game/gui.rpy
+++ b/game/gui.rpy
@@ -11,7 +11,8 @@ init offset = -2
 init python:
     gui.init(1920, 1080)
 
-
+## Enable checks for invalid or unstable properties in screens or transforms
+#define config.check_conflicting_properties = True
 
 ################################################################################
 ## GUI Configuration Variables
@@ -362,6 +363,8 @@ define config.history_length = 250
 ## the cost of performance.
 define gui.history_height = 210
 
+define gui.history_spacing = 0
+
 ## The position, width, and alignment of the label giving the name of the
 ## speaking character.
 define gui.history_name_xpos = 233
@@ -419,6 +422,7 @@ define gui.nvl_thought_xalign = 0.0
 define gui.nvl_button_xpos = 675
 define gui.nvl_button_xalign = 0.0
 
+
 ## Localization ################################################################
 
 ## This controls where a line break is permitted. The default is suitable
diff --git a/game/gui/bubble.png b/game/gui/bubble.png
new file mode 100644
index 0000000..3b23ff3
Binary files /dev/null and b/game/gui/bubble.png differ
diff --git a/game/gui/thoughtbubble.png b/game/gui/thoughtbubble.png
new file mode 100644
index 0000000..8d5d44b
Binary files /dev/null and b/game/gui/thoughtbubble.png differ
diff --git a/game/options.rpy b/game/options.rpy
index f8f87a4..3150711 100644
--- a/game/options.rpy
+++ b/game/options.rpy
@@ -235,9 +235,9 @@ init python:
     build.documentation('*.txt')
 
 
-## A Google Play license key is required to download expansion files and perform
-## in-app purchases. It can be found on the "Services & APIs" page of the Google
-## Play developer console.
+## A Google Play license key is required to perform in-app purchases. It can be
+## found in the Google Play developer console, under "Monetize" > "Monetization
+## Setup" > "Licensing".
 
 # define build.google_play_key = "..."
 
diff --git a/game/screens.rpy b/game/screens.rpy
index fa3d5cd..1b519cf 100644
--- a/game/screens.rpy
+++ b/game/screens.rpy
@@ -251,7 +251,7 @@ style choice_button is default:
     activate_sound "audio/ui/uiRollover.wav"
 
 style choice_button_text is default:
-    properties gui.button_text_properties("choice_button")
+    properties gui.text_properties("choice_button")
 
 
 ## Quick Menu screen ###########################################################
@@ -376,7 +376,7 @@ style navigation_button:
     properties gui.button_properties("navigation_button")
 
 style navigation_button_text:
-    properties gui.button_text_properties("navigation_button")
+    properties gui.text_properties("navigation_button")
 
 
 ## Main Menu screen ############################################################
@@ -576,11 +576,11 @@ style main_menu_ex_frame is main_menu_frame
 ## This lays out the basic common structure of a game menu screen. It's called
 ## with the screen title, and displays the background, title, and navigation.
 ##
-## The scroll parameter can be None, or one of "viewport" or "vpgrid". When
-## this screen is intended to be used with one or more children, which are
+## The scroll parameter can be None, or one of "viewport" or "vpgrid".
+## This screen is intended to be used with one or more children, which are
 ## transcluded (placed) inside it.
 
-screen game_menu(title, scroll=None, yinitial=0.0):
+screen game_menu(title, scroll=None, yinitial=0.0, spacing=0):
 
     style_prefix "game_menu"
 
@@ -613,6 +613,8 @@ screen game_menu(title, scroll=None, yinitial=0.0):
                         side_yfill True
 
                         vbox:
+                            spacing spacing
+
                             transclude
 
                 elif scroll == "vpgrid":
@@ -628,6 +630,8 @@ screen game_menu(title, scroll=None, yinitial=0.0):
 
                         side_yfill True
 
+                        spacing spacing
+
                         transclude
 
                 else:
@@ -889,6 +893,7 @@ screen file_slots(title, flag=False):
                     spacing gui.page_spacing
 
                     textbutton _("<") activate_sound "audio/ui/uiRollover.wav" action FilePagePrevious()
+                    key "save_page_prev" action FilePagePrevious()
 
                     if config.has_autosave:
                         textbutton _("{#auto_page}A") activate_sound "audio/ui/uiClick.wav" action FilePage("auto")
@@ -901,6 +906,7 @@ screen file_slots(title, flag=False):
                         textbutton "[page]" activate_sound "audio/ui/uiClick.wav" action FilePage(page)
 
                     textbutton _(">") activate_sound "audio/ui/uiRollover.wav" action FilePageNext(max=9)
+                    key "save_page_next" action FilePageNext()
 
                 if config.has_sync:
                     if CurrentScreenName() == "save":
@@ -928,7 +934,7 @@ style page_label:
     ypadding 5
 
 style page_label_text:
-    text_align 0.5
+    textalign 0.5
     layout "subtitle"
     hover_color gui.hover_color
 
@@ -936,13 +942,13 @@ style page_button:
     properties gui.button_properties("page_button")
 
 style page_button_text:
-    properties gui.button_text_properties("page_button")
+    properties gui.text_properties("page_button")
 
 style slot_button:
     properties gui.button_properties("slot_button")
 
 style slot_button_text:
-    properties gui.button_text_properties("slot_button")
+    properties gui.text_properties("slot_button")
 
 
 ## Preferences screen ##########################################################
@@ -1137,7 +1143,7 @@ style radio_button:
     foreground "gui/button/radio_[prefix_]foreground.png"
 
 style radio_button_text:
-    properties gui.button_text_properties("radio_button")
+    properties gui.text_properties("radio_button")
 
 style check_vbox:
     spacing gui.pref_button_spacing
@@ -1147,7 +1153,7 @@ style check_button:
     foreground "gui/button/check_[prefix_]foreground.png"
 
 style check_button_text:
-    properties gui.button_text_properties("check_button")
+    properties gui.text_properties("check_button")
 
 style slider_slider:
     xsize 525
@@ -1158,7 +1164,7 @@ style slider_button:
     left_margin 15
 
 style slider_button_text:
-    properties gui.button_text_properties("slider_button")
+    properties gui.text_properties("slider_button")
 
 style slider_vbox:
     xsize 675
@@ -1179,7 +1185,7 @@ screen history():
     ## Avoid predicting this screen, as it can be very large.
     predict False
 
-    use game_menu(_("History"), scroll=("vpgrid" if gui.history_height else "viewport"), yinitial=1.0):
+    use game_menu(_("History"), scroll=("vpgrid" if gui.history_height else "viewport"), yinitial=1.0, spacing=gui.history_spacing):
 
         style_prefix "history"
 
@@ -1238,7 +1244,7 @@ style history_name:
 
 style history_name_text:
     min_width gui.history_name_width
-    text_align gui.history_name_xalign
+    textalign gui.history_name_xalign
 
 style history_text:
     xpos gui.history_text_xpos
@@ -1246,7 +1252,7 @@ style history_text:
     xanchor gui.history_text_xalign
     xsize gui.history_text_width
     min_width gui.history_text_width
-    text_align gui.history_text_xalign
+    textalign gui.history_text_xalign
     layout ("subtitle" if gui.history_text_xalign else "tex")
 
 style history_label:
@@ -1411,7 +1417,7 @@ screen mouse_help():
         text _("Accesses the game menu. Also escapes the Gallery.")
 
     hbox:
-        label _("Mouse Wheel Up\nClick Rollback Side")
+        label _("Mouse Wheel Up")
         text _("Rolls back to earlier dialogue.")
 
     hbox:
@@ -1433,13 +1439,12 @@ screen gamepad_help():
         label _("Right Shoulder")
         text _("Rolls forward to later dialogue.")
 
-
     hbox:
         label _("D-Pad, Sticks")
         text _("Navigate the interface.")
 
     hbox:
-        label _("Start, Guide")
+        label _("Start, Guide, B/Right Button")
         text _("Accesses the game menu.")
 
     hbox:
@@ -1460,7 +1465,7 @@ style help_button:
     xmargin 12
 
 style help_button_text:
-    properties gui.button_text_properties("help_button")
+    properties gui.text_properties("help_button")
 
 style help_label:
     xsize 375
@@ -1529,14 +1534,14 @@ style confirm_frame:
     yalign .5
 
 style confirm_prompt_text:
-    text_align 0.5
+    textalign 0.5
     layout "subtitle"
 
 style confirm_button:
     properties gui.button_properties("confirm_button")
 
 style confirm_button_text:
-    properties gui.button_text_properties("confirm_button")
+    properties gui.text_properties("confirm_button")
 
 
 ## Skip indicator screen #######################################################
@@ -1723,7 +1728,7 @@ style nvl_label:
     yanchor 0.0
     xsize gui.nvl_name_width
     min_width gui.nvl_name_width
-    text_align gui.nvl_name_xalign
+    textalign gui.nvl_name_xalign
 
 style nvl_dialogue:
     xpos gui.nvl_text_xpos
@@ -1731,7 +1736,7 @@ style nvl_dialogue:
     ypos gui.nvl_text_ypos
     xsize gui.nvl_text_width
     min_width gui.nvl_text_width
-    text_align gui.nvl_text_xalign
+    textalign gui.nvl_text_xalign
     layout ("subtitle" if gui.nvl_text_xalign else "tex")
 
 style nvl_thought:
@@ -1740,7 +1745,7 @@ style nvl_thought:
     ypos gui.nvl_thought_ypos
     xsize gui.nvl_thought_width
     min_width gui.nvl_thought_width
-    text_align gui.nvl_thought_xalign
+    textalign gui.nvl_thought_xalign
     layout ("subtitle" if gui.nvl_text_xalign else "tex")
 
 style nvl_button:
@@ -1752,6 +1757,94 @@ style nvl_button_text:
     properties gui.button_text_properties("nvl_button")
 
 
+## Bubble screen ###############################################################
+##
+## The bubble screen is used to display dialogue to the player when using speech
+## bubbles. The bubble screen takes the same parameters as the say screen, must
+## create a displayable with the id of "what", and can create displayables with
+## the "namebox", "who", and "window" ids.
+##
+## https://www.renpy.org/doc/html/bubble.html#bubble-screen
+
+screen bubble(who, what):
+    style_prefix "bubble"
+
+    window:
+        id "window"
+
+        if who is not None:
+
+            window:
+                id "namebox"
+                style "bubble_namebox"
+
+                text who:
+                    id "who"
+
+        text what:
+            id "what"
+
+style bubble_window is empty
+style bubble_namebox is empty
+style bubble_who is default
+style bubble_what is default
+
+style bubble_window:
+    xpadding 30
+    top_padding 5
+    bottom_padding 5
+
+style bubble_namebox:
+    xalign 0.5
+
+style bubble_who:
+    xalign 0.5
+    textalign 0.5
+    color "#000"
+
+style bubble_what:
+    align (0.5, 0.5)
+    text_align 0.5
+    layout "subtitle"
+    color "#000"
+
+define bubble.frame = Frame("gui/bubble.png", 55, 55, 55, 95)
+define bubble.thoughtframe = Frame("gui/thoughtbubble.png", 55, 55, 55, 55)
+
+define bubble.properties = {
+    "bottom_left" : {
+        "window_background" : Transform(bubble.frame, xzoom=1, yzoom=1),
+        "window_bottom_padding" : 27,
+    },
+
+    "bottom_right" : {
+        "window_background" : Transform(bubble.frame, xzoom=-1, yzoom=1),
+        "window_bottom_padding" : 27,
+    },
+
+    "top_left" : {
+        "window_background" : Transform(bubble.frame, xzoom=1, yzoom=-1),
+        "window_top_padding" : 27,
+    },
+
+    "top_right" : {
+        "window_background" : Transform(bubble.frame, xzoom=-1, yzoom=-1),
+        "window_top_padding" : 27,
+    },
+
+    "thought" : {
+        "window_background" : bubble.thoughtframe,
+    }
+}
+
+define bubble.expand_area = {
+    "bottom_left" : (0, 0, 0, 22),
+    "bottom_right" : (0, 0, 0, 22),
+    "top_left" : (0, 22, 0, 0),
+    "top_right" : (0, 22, 0, 0),
+    "thought" : (0, 0, 0, 0),
+}
+
 
 ################################################################################
 ## Mobile Variants