diff --git a/builtin/fstk/buttonbar.lua b/builtin/fstk/buttonbar.lua
index ef8f577a4..25b9a668c 100644
--- a/builtin/fstk/buttonbar.lua
+++ b/builtin/fstk/buttonbar.lua
@@ -24,8 +24,8 @@ local function buttonbar_formspec(self)
 		return ""
 	end
 
-	local formspec = string.format("box[%f,%f;%f,%f;%s]",
-			self.pos.x,self.pos.y ,self.size.x,self.size.y,self.bgcolor)
+	local formspec = string.format("background9[%f,%f;%f,%f;%sside_menu_left.png;false;30]",
+			self.pos.x, self.pos.y - 0.1, self.size.x + 0.025, self.size.y + 0.35, defaulttexturedir)
 
 	for i=self.startbutton,#self.buttons,1 do
 		local btn_name = self.buttons[i].name
@@ -36,7 +36,7 @@ local function buttonbar_formspec(self)
 			(i - self.startbutton) * self.btn_size +       --button offset
 			self.btn_initial_offset
 		else
-			btn_pos.x = self.pos.x + (self.btn_size * 0.1)
+			btn_pos.x = self.pos.x + (self.btn_size * 0.05)
 		end
 
 		if self.orientation == "vertical" then
@@ -99,10 +99,10 @@ local function buttonbar_formspec(self)
 		else
 			btn_size.x = self.btn_size
 			btn_size.y = self.btn_size * 0.5
-			btn_dec_pos.x = self.pos.x + (self.btn_size * 0.1)
+			btn_dec_pos.x = self.pos.x + (self.btn_size * 0.05)
 			btn_dec_pos.y = self.pos.y + (self.btn_size * 0.05)
-			btn_inc_pos.x = self.pos.x + (self.btn_size * 0.1)
-			btn_inc_pos.y = self.size.y - (self.btn_size * 0.75)
+			btn_inc_pos.x = self.pos.x + (self.btn_size * 0.05)
+			btn_inc_pos.y = self.pos.y + self.size.y - (self.btn_size * 0.45)
 		end
 
 		if self.orientation == "horizontal" then
@@ -141,7 +141,7 @@ end
 local function buttonbar_buttonhandler(self, fields)
 
 	if fields["btnbar_inc_" .. self.name] ~= nil and
-		self.startbutton < #self.buttons - 5 then
+		self.startbutton < #self.buttons - 4 then
 
 		self.startbutton = self.startbutton + 1
 		return true
diff --git a/builtin/fstk/dialog.lua b/builtin/fstk/dialog.lua
index f70cc2b6a..feee1d46f 100644
--- a/builtin/fstk/dialog.lua
+++ b/builtin/fstk/dialog.lua
@@ -85,6 +85,7 @@ function messagebox(name, message)
 	return dialog_create(name,
 			function()
 				return ([[
+					set_focus[ok;true]
 					textarea[1,1;10,4;;;%s]
 					button[5,4.5;2,0.8;ok;%s]
 				]]):format(message, fgettext("OK"))
diff --git a/builtin/fstk/tabview.lua b/builtin/fstk/tabview.lua
index b0d634c63..d4fcd708b 100644
--- a/builtin/fstk/tabview.lua
+++ b/builtin/fstk/tabview.lua
@@ -26,6 +26,8 @@
 -- element.getFormspec() returns formspec of tabview                          --
 --------------------------------------------------------------------------------
 
+local defaulttexturedir = core.formspec_escape(defaulttexturedir)
+
 --------------------------------------------------------------------------------
 local function add_tab(self,tab)
 	assert(tab.size == nil or (type(tab.size) == table and
@@ -49,6 +51,7 @@ local function add_tab(self,tab)
 	-- Hidden tabs have a negative index
 	local i
 	if tab.hidden then
+		newtab.tabdata.hidden = true
 		i = -1
 		while self.tablist[i] do
 			i = i - 1
@@ -67,6 +70,21 @@ local function add_tab(self,tab)
 end
 
 --------------------------------------------------------------------------------
+local function make_side_pane_tab(y, tab_name, tooltip, selected)
+	local formspec = "style[" .. tab_name .. "_tab;bgimg=" ..
+			defaulttexturedir .. tab_name
+	if selected then
+		formspec = formspec .. "_menu_selected.png]"
+	else
+		formspec = formspec .. "_menu.png;bgimg_hovered=" ..
+				defaulttexturedir .. tab_name .. "_menu_hover.png]"
+	end
+
+	return formspec ..
+			"image_button[12.1," .. y .. ";1,1.5;;" .. tab_name .. "_tab;;true;false]" ..
+			"tooltip[" .. tab_name .. "_tab;" .. tooltip .. "]"
+end
+
 local function get_formspec(self)
 	local formspec = ""
 
@@ -76,7 +94,6 @@ local function get_formspec(self)
 		if self.parent == nil then
 			local tsize = self.tablist[self.last_tab_index].tabsize or
 					{width=self.width, height=self.height}
-			local defaulttexturedir = core.formspec_escape(defaulttexturedir)
 			formspec = formspec ..
 					string.format("size[%f,%f,%s]",tsize.width + 2,tsize.height + 1,
 						dump(self.fixed_size)) ..
@@ -85,19 +102,15 @@ local function get_formspec(self)
 					"background9[-0.2,-1.26;" .. tsize.width + 0.4 .. "," ..
 						tsize.height + 1.75 .. ";" .. defaulttexturedir ..
 						"bg_common.png;false;40]" ..
-					"style[settings_tab;content_offset=0]" ..
-					"image_button[12.02,1.3;1,1.55;" ..
-						defaulttexturedir .. "settings_menu.png;settings_tab;;true;false;" ..
-						defaulttexturedir .. "settings_menu_pressed.png]" ..
-					"style[authors_tab;content_offset=0]" ..
-					"image_button[12.02,2.7;1,1.55;" ..
-						defaulttexturedir .. "authors_menu.png;authors_tab;;true;false;" ..
-						defaulttexturedir .. "authors_menu_pressed.png]"
+
+					"background9[12.13,1.05;0.9,2.6;" .. defaulttexturedir .. "side_menu.png;false;30]" ..
+					make_side_pane_tab(0.9, "settings", fgettext("Settings"), name == "settings") ..
+					"image[12.15,2.26;0.9,0.06;" .. defaulttexturedir .. "side_menu_divider.png]" ..
+					make_side_pane_tab(2.3, "authors", fgettext("Credits"), name == "credits")
 		end
 
 	--	formspec = formspec .. self:tab_header()
-		formspec = formspec .. self:button_header()
-		formspec = formspec ..
+		formspec = formspec .. self:button_header() ..
 				self.tablist[self.last_tab_index].get_formspec(
 					self,
 					name,
@@ -269,17 +282,18 @@ end
 --------------------------------------------------------------------------------
 local function handle_tab_buttons(self,fields)
 	--save tab selection to config file
-	if fields[self.name] then
+	--[[if fields[self.name] then
 		local index = tonumber(fields[self.name])
 		switch_to_tab(self, index)
 		return true
-	end
+	end]]
 
 	local name_prefix = self.name .. "_"
 	local name_prefix_len = #name_prefix
 	for field in pairs(fields) do
 		if field:sub(1, name_prefix_len) == name_prefix then
 			local index = tonumber(field:sub(name_prefix_len + 1))
+			if self.last_tab_index == index then return false end
 			switch_to_tab(self, index)
 			return true
 		end
diff --git a/builtin/mainmenu/common.lua b/builtin/mainmenu/common.lua
index 99357e59c..cadf169f3 100644
--- a/builtin/mainmenu/common.lua
+++ b/builtin/mainmenu/common.lua
@@ -59,6 +59,10 @@ end
 
 --------------------------------------------------------------------------------
 function render_serverlist_row(spec, is_favorite)
+	if not spec then
+		spec = {}
+	end
+
 	-- Get information from non_mobile_servers.
 	if is_favorite and not spec.proto_min and spec.address and spec.port and
 			serverlistmgr.non_mobile_servers then
diff --git a/builtin/mainmenu/dlg_contentstore.lua b/builtin/mainmenu/dlg_contentstore.lua
index f7f728d43..dfaa96add 100644
--- a/builtin/mainmenu/dlg_contentstore.lua
+++ b/builtin/mainmenu/dlg_contentstore.lua
@@ -1004,6 +1004,11 @@ function create_store_dlg(type)
 	search_string = ""
 	cur_page = 1
 
+	-- ToDo: delete me when MultiCraft ContentDB is ready
+	if type and type ~= "game" then
+		type = "game"
+	end
+
 	if type then
 		-- table.indexof does not work on tables that contain `nil`
 		for i, v in pairs(filter_types_type) do
diff --git a/builtin/mainmenu/dlg_create_world.lua b/builtin/mainmenu/dlg_create_world.lua
index f7c0945b9..11c30b8c4 100644
--- a/builtin/mainmenu/dlg_create_world.lua
+++ b/builtin/mainmenu/dlg_create_world.lua
@@ -388,6 +388,12 @@ local function create_world_buttonhandler(this, fields)
 				gameindex = gameindex + 1
 			end
 
+			if not pkgmgr.games[gameindex] then
+				gamedata.errormessage = fgettext("No game selected")
+				this:delete()
+				return true
+			end
+
 			-- For unnamed worlds use the generated name 'World <number>',
 			-- where the number increments: it is set to 1 larger than the largest
 			-- generated name number found.
@@ -457,7 +463,9 @@ local function create_world_buttonhandler(this, fields)
 		if gameindex >= pkgmgr.default_game_idx then
 			gameindex = gameindex + 1
 		end
-		core.settings:set("menu_last_game", pkgmgr.games[gameindex].id)
+		local game = pkgmgr.games[gameindex]
+		if not game then return end
+		core.settings:set("menu_last_game", game.id)
 		return true
 	end
 
diff --git a/builtin/mainmenu/dlg_delete_content.lua b/builtin/mainmenu/dlg_delete_content.lua
index f583b25ce..402441d36 100644
--- a/builtin/mainmenu/dlg_delete_content.lua
+++ b/builtin/mainmenu/dlg_delete_content.lua
@@ -70,6 +70,16 @@ end
 function create_delete_content_dlg(content)
 	assert(content.name)
 
+	if content.type == "game" then
+		for _, world in ipairs(menudata.worldlist:get_raw_list()) do
+			if world.gameid == content.id then
+				return messagebox("dlg_delete_content",
+					fgettext("You cannot delete this game!") .. "\n" ..
+					fgettext("You have worlds that use it."))
+			end
+		end
+	end
+
 	local retval = dialog_create("dlg_delete_content",
 					delete_content_formspec,
 					delete_content_buttonhandler,
diff --git a/builtin/mainmenu/init.lua b/builtin/mainmenu/init.lua
index 6be81c243..fea2b506e 100644
--- a/builtin/mainmenu/init.lua
+++ b/builtin/mainmenu/init.lua
@@ -109,6 +109,7 @@ function menudata.init_tabs()
 	for i = 1, #pkgmgr.games do
 		if pkgmgr.games[i].id == "default" then
 			tv_main:add(tabs.local_default_game)
+			tabs.local_game.hidden = true
 			break
 		end
 	end
diff --git a/builtin/mainmenu/tab_content.lua b/builtin/mainmenu/tab_content.lua
index e96358321..745a6fdb2 100644
--- a/builtin/mainmenu/tab_content.lua
+++ b/builtin/mainmenu/tab_content.lua
@@ -66,7 +66,9 @@ local function get_formspec(tabview, name, tabdata)
 		"table[0,0.25;5.1,4.3;pkglist;" ..
 		pkgmgr.render_packagelist(packages) ..
 		";" .. tabdata.selected_pkg .. "]" ..
-		"button[0,4.85;5.25,0.5;btn_contentdb;".. fgettext("Browse online content") .. "]"
+		"style[btn_contentdb;padding=-5;bgimg=" .. defaulttexturedir ..
+			"select_btn.png;bgimg_middle=10]" ..
+		"image_button[-0.11,4.8;5.5,0.92;;btn_contentdb;" .. fgettext("Browse online content") .. ";true;false]"
 
 
 	local selected_pkg
@@ -144,8 +146,7 @@ local function get_formspec(tabview, name, tabdata)
 		retval = retval .. "textarea[5.85,2.2;6.35,2.9;;" ..
 			fgettext("Information:") .. ";" .. desc .. "]"
 
-		if core.may_modify_path(selected_pkg.path) and not
-			(selected_pkg.type == "game" and selected_pkg.name == "default") then
+		if core.may_modify_path(selected_pkg.path) then
 			retval = retval ..
 				"button[5.5,4.65;3.25,1;btn_mod_mgr_delete_mod;" ..
 				fgettext("Uninstall Package") .. "]"
diff --git a/builtin/mainmenu/tab_credits.lua b/builtin/mainmenu/tab_credits.lua
index 54db52ce6..41fd821f8 100644
--- a/builtin/mainmenu/tab_credits.lua
+++ b/builtin/mainmenu/tab_credits.lua
@@ -118,17 +118,19 @@ return {
 	caption = "", -- fgettext("Credits"),
 	cbf_formspec = function(tabview, name, tabdata)
 		local version = core.get_version()
-		local fs = "label[0.05,-0.2;" ..
+		local logofile = defaulttexturedir .. "logo.png"
+		local fs = "image[-0.1,-0.3;2,2;" .. logofile .. "]" ..
+			"label[1.4,-0.25;" ..
 			"MultiCraft Open Source, ver. " .. version.string .. "\n" ..
 			"Copyright (C) 2014-2022 MultiCraft Development Team\n" ..
 			"License: GNU LGPLv3.0+ and CC BY-SA 4.0\n" ..
 			"Created and Powered by Minetest Engine, ver. 5.4.1]" ..
 
-			"style[homepage;padding=-10;bgimg=" .. defaulttexturedir ..
-				"select_btn.png;bgimg_middle=20]" ..
+			"style[homepage;padding=-5;bgimg=" .. defaulttexturedir ..
+				"select_btn.png;bgimg_middle=10]" ..
 			"image_button[9.5,-0.25;2.5,0.9;;homepage;Home Page;true;false]" ..
-			"style[privacy;padding=-10;bgimg=" .. defaulttexturedir ..
-				"select_btn.png;bgimg_middle=20]" ..
+			"style[privacy;padding=-5;bgimg=" .. defaulttexturedir ..
+				"select_btn.png;bgimg_middle=10]" ..
 			"image_button[9.5,0.6;2.5,0.9;;privacy;Privacy Policy;true;false]" ..
 
 			"background9[0.1,1.5;11.85,4.15;" .. defaulttexturedir ..
@@ -136,9 +138,9 @@ return {
 			"tablecolumns[color;text]" ..
 			"tableoptions[background=#0000;highlight=#00000000;border=false]" ..
 			"table[0.1,1.5;11.65,4;list_credits;" ..
-			"#FFFF00," .. fgettext("MultiCraft Developers") .. ",," ..
+			"#FFFF00," .. fgettext("Core Developers") .. " (MultiCraft)" .. ",," ..
 			buildCreditList(multicraft_developers) .. ",,," ..
-			"#FFFF00," .. fgettext("Minetest Developers") .. ",," ..
+			"#FFFF00," .. fgettext("Core Developers") .. " (Minetest Engine)" .. ",," ..
 			buildCreditList(core_developers) .. ",,," ..
 			"#FFFF00," .. fgettext("Active Contributors") .. ",," ..
 			buildCreditList(active_contributors) .. ",,," ..
diff --git a/builtin/mainmenu/tab_local.lua b/builtin/mainmenu/tab_local.lua
index c6e1002c6..9d60e7c41 100644
--- a/builtin/mainmenu/tab_local.lua
+++ b/builtin/mainmenu/tab_local.lua
@@ -71,7 +71,7 @@ local function singleplayer_refresh_gamebar()
 
 	local btnbar = buttonbar_create("game_button_bar",
 		game_buttonbar_button_handler,
-		{x=-0.35, y=-0.32}, "vertical", {x=1, y=7.14})
+		{x=-0.15, y=0.18}, "vertical", {x=1, y=6.14})
 
 	for i=1, #pkgmgr.games do
 		if pkgmgr.games[i].id ~= "default" then
@@ -103,7 +103,7 @@ local function singleplayer_refresh_gamebar()
 	btnbar:add_button("game_open_cdb", "", "", fgettext("Install games from ContentDB"), true)
 end
 
-local function get_formspec()
+local function get_formspec(_, _, tab_data)
 	local index = filterlist.get_current_index(menudata.worldlist,
 				tonumber(core.settings:get("mainmenu_last_selected_world")))
 
@@ -141,16 +141,19 @@ local function get_formspec()
 
 			"background9[0,0;6.5,4.8;" .. defaulttexturedir .. "worldlist_bg.png" .. ";false;40]" ..
 			"tableoptions[background=#0000;border=false]" ..
-			"table[0,0;6.28,4.64;sp_worlds;" .. menu_render_worldlist() .. ";" .. index .. "]" ..
+			"table[0,0;6.28,4.64;sp_worlds;" .. menu_render_worldlist() .. ";" .. index .. "]"
 
+	if tab_data.hidden then
+		retval = retval ..
 			"style[switch_local_default;fgimg=" .. defaulttexturedir .. "switch_local_default.png;fgimg_hovered=" ..
 				defaulttexturedir .. "switch_local_default_hover.png]" ..
 			"image_button[10.6,-0.1;1.5,1.5;;switch_local_default;;true;false]"
+	end
 
 	if PLATFORM ~= "Android" and PLATFORM ~= "iOS" then
 		retval = retval ..
-			"style[world_configure;padding=-10;bgimg=" .. defaulttexturedir ..
-				"select_btn.png;bgimg_middle=20]" ..
+			"style[world_configure;padding=-5;bgimg=" .. defaulttexturedir ..
+				"select_btn.png;bgimg_middle=10]" ..
 			"image_button[9.3,4.84;2.7,0.92;;world_configure;" .. fgettext("Select Mods") .. ";true;false]"
 	end
 
@@ -239,7 +242,7 @@ local function main_button_handler(this, fields, name)
 		local world = menudata.worldlist:get_raw_element(gamedata.selected_world)
 		if world then
 			local game = pkgmgr.find_by_gameid(world.gameid)
-			core.settings:set("menu_last_game", game.id)
+			core.settings:set("menu_last_game", (game and game.id or ""))
 		end
 
 		if core.settings:get_bool("enable_server") then
@@ -321,7 +324,14 @@ local function main_button_handler(this, fields, name)
 	end
 
 	if fields["game_open_cdb"] then
-		this:set_tab("content")
+		if #pkgmgr.games > 1 or (pkgmgr.games[1] and pkgmgr.games[1].id ~= "default") then
+			this:set_tab("content")
+		else
+			local dlg = create_store_dlg()
+			dlg:set_parent(this)
+			this:hide()
+			dlg:show()
+		end
 
 		return true
 	end
@@ -347,7 +357,7 @@ local function on_change(type, old_tab, new_tab)
 
 		local game = current_game()
 
-		if game then
+		if game and game.id ~= "default" then
 			menudata.worldlist:set_filtercriteria(game.id)
 			mm_texture.update("singleplayer",game)
 		end
@@ -371,7 +381,6 @@ end
 return {
 	name = "local",
 	caption = fgettext("Singleplayer"),
-	hidden = true,
 	cbf_formspec = get_formspec,
 	cbf_button_handler = main_button_handler,
 	on_change = on_change
diff --git a/builtin/mainmenu/tab_local_default.lua b/builtin/mainmenu/tab_local_default.lua
index 4fdd11be9..95266cedd 100644
--- a/builtin/mainmenu/tab_local_default.lua
+++ b/builtin/mainmenu/tab_local_default.lua
@@ -118,7 +118,7 @@ local function get_formspec(this)
 				defaulttexturedir .. "gift_btn_pressed.png]"
 	end
 
-	if PLATFORM ~= "Android" and PLATFORM ~= "iOS" then
+	if PLATFORM ~= "iOS" then
 		retval = retval ..
 			"style[switch_local;fgimg=" .. defaulttexturedir .. "switch_local.png;fgimg_hovered=" ..
 				defaulttexturedir .. "switch_local_hover.png]" ..
diff --git a/builtin/mainmenu/tab_online.lua b/builtin/mainmenu/tab_online.lua
index 9ff746396..2d7837dde 100644
--- a/builtin/mainmenu/tab_online.lua
+++ b/builtin/mainmenu/tab_online.lua
@@ -371,7 +371,7 @@ local function main_button_handler(tabview, fields, name, tabdata)
 		gamedata.playername = fields.te_name
 		gamedata.password   = fields.te_pwd
 		gamedata.address    = fields.te_address
-		gamedata.port       = tonumber(fields.te_port)
+		gamedata.port       = tonumber(fields.te_port) or 30000
 		gamedata.selected_world = 0
 		local fav_idx = core.get_table_index("favorites")
 		local fav = serverlist[fav_idx]
diff --git a/textures/base/pack/authors_menu.png b/textures/base/pack/authors_menu.png
index b4035c2e5..b5ca2c5a3 100644
Binary files a/textures/base/pack/authors_menu.png and b/textures/base/pack/authors_menu.png differ
diff --git a/textures/base/pack/authors_menu_hover.png b/textures/base/pack/authors_menu_hover.png
new file mode 100644
index 000000000..8a82df3f4
Binary files /dev/null and b/textures/base/pack/authors_menu_hover.png differ
diff --git a/textures/base/pack/authors_menu_pressed.png b/textures/base/pack/authors_menu_pressed.png
deleted file mode 100644
index 8a41db9c2..000000000
Binary files a/textures/base/pack/authors_menu_pressed.png and /dev/null differ
diff --git a/textures/base/pack/authors_menu_selected.png b/textures/base/pack/authors_menu_selected.png
new file mode 100644
index 000000000..ba8812453
Binary files /dev/null and b/textures/base/pack/authors_menu_selected.png differ
diff --git a/textures/base/pack/logo.png b/textures/base/pack/logo.png
new file mode 100644
index 000000000..5e139b2c3
Binary files /dev/null and b/textures/base/pack/logo.png differ
diff --git a/textures/base/pack/select_btn.png b/textures/base/pack/select_btn.png
index d984c58ff..eb7a8e998 100644
Binary files a/textures/base/pack/select_btn.png and b/textures/base/pack/select_btn.png differ
diff --git a/textures/base/pack/settings_menu.png b/textures/base/pack/settings_menu.png
index 7b5e99396..99954a900 100644
Binary files a/textures/base/pack/settings_menu.png and b/textures/base/pack/settings_menu.png differ
diff --git a/textures/base/pack/settings_menu_hover.png b/textures/base/pack/settings_menu_hover.png
new file mode 100644
index 000000000..0f07e1a5e
Binary files /dev/null and b/textures/base/pack/settings_menu_hover.png differ
diff --git a/textures/base/pack/settings_menu_pressed.png b/textures/base/pack/settings_menu_pressed.png
deleted file mode 100644
index c625b504e..000000000
Binary files a/textures/base/pack/settings_menu_pressed.png and /dev/null differ
diff --git a/textures/base/pack/settings_menu_selected.png b/textures/base/pack/settings_menu_selected.png
new file mode 100644
index 000000000..74f6962e0
Binary files /dev/null and b/textures/base/pack/settings_menu_selected.png differ
diff --git a/textures/base/pack/side_menu.png b/textures/base/pack/side_menu.png
new file mode 100644
index 000000000..903f9ee44
Binary files /dev/null and b/textures/base/pack/side_menu.png differ
diff --git a/textures/base/pack/side_menu_divider.png b/textures/base/pack/side_menu_divider.png
new file mode 100644
index 000000000..917ad1505
Binary files /dev/null and b/textures/base/pack/side_menu_divider.png differ
diff --git a/textures/base/pack/side_menu_left.png b/textures/base/pack/side_menu_left.png
new file mode 100644
index 000000000..d84644a69
Binary files /dev/null and b/textures/base/pack/side_menu_left.png differ
diff --git a/textures/base/pack/switch_local_default_hover.png b/textures/base/pack/switch_local_default_hover.png
index 0a6abed74..dca808e3a 100644
Binary files a/textures/base/pack/switch_local_default_hover.png and b/textures/base/pack/switch_local_default_hover.png differ
diff --git a/textures/base/pack/switch_local_hover.png b/textures/base/pack/switch_local_hover.png
index a0b8084b3..01649f795 100644
Binary files a/textures/base/pack/switch_local_hover.png and b/textures/base/pack/switch_local_hover.png differ