diff --git a/mainmenu/init.lua b/mainmenu/init.lua
index f34327c..a4c5a3b 100644
--- a/mainmenu/init.lua
+++ b/mainmenu/init.lua
@@ -77,32 +77,123 @@ local default_game_menu = [[
     scroll_container[${@WIDTH * 0.1},${@HEIGHT * 0.1};${@list_width},${@HEIGHT * 0.8};worldscroll;vertical;;0,0]
     @foreach:@WORLDS:worlds
       @if:@i % 2:sel
-        style[.select_world_${@name};bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#373530]
-        style[.select_world_${@name}:hovered;bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#373530]
-        style[.select_world_${@name}:hovered+focused;bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#373530]
+        style[.select_world_${@path};bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#373530]
+        style[.select_world_${@path}:hovered;bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#373530]
+        style[.select_world_${@path}:hovered+focused;bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#373530]
       @else:sel
-        style[.select_world_${@name};bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#403e39]
-        style[.select_world_${@name}:hovered;bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#403e39]
-        style[.select_world_${@name}:hovered+focused;bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#403e39]
+        style[.select_world_${@path};bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#403e39]
+        style[.select_world_${@path}:hovered;bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#403e39]
+        style[.select_world_${@path}:hovered+focused;bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#403e39]
       @endif:sel
-      button[0,${(@i +-1) * 0.5};${@list_width},0.5;.select_world_${@name};${@name}]
+      button[0,${(@i +-1) * 0.5};${@list_width},0.5;.select_world_${@path};${@name}]
     @endforeach:worlds
     scroll_container_end[]
     
     @if:@selected_world:fi
-        box[${@WIDTH * 0.4 +-0.05},${@HEIGHT * 0.1};0.1,${@HEIGHT * 0.8};#292d2fff]
-        scroll_container[${@WIDTH * 0.4},${@HEIGHT * 0.1};${@WIDTH * 0.8},${@HEIGHT * 0.8};worldmodsscroll;vertical;;0,0]
-        @foreach:@WORLDMODS:wm
-            label[0,${@i};${@name}]
-        @endforeach:wm
+        box[${@WIDTH * 0.4 +-0.05},${@HEIGHT * 0.1 +-0.1};0.1,${@HEIGHT * 0.8 + 0.2};#292d2fff]
+        scroll_container[${@WIDTH * 0.4 + 0.05},${@HEIGHT * 0.1};${@WIDTH * 0.8 +-0.05},${@HEIGHT * 0.8};worlconfigscroll;vertical;;0,0]
+        @set:j:0
+        
+        @if:@setting_damage:fii
+            @if:@damage_enabled:fiii
+                image_button[0,${@j};0.5,0.5;$DEFAULT_ASSET_PATH/checkbox_filled.png;.set_damage_enabled_to_0;]
+            @else:fiii
+                image_button[0,${@j};0.5,0.5;$DEFAULT_ASSET_PATH/checkbox_empty.png;.set_damage_enabled_to_1;]
+            @endif:fiii
+            label[0.5,${@j + 0.25};Damage]
+            @set:j:@j + 0.5
+        @else:fii
+            
+        @endif:fii
+        
+        @if:@setting_creative:fii
+            @if:@creative_enabled:fiii
+                image_button[0,${@j};0.5,0.5;$DEFAULT_ASSET_PATH/checkbox_filled.png;.set_creative_enabled_to_0;]
+            @else:fiii
+                image_button[0,${@j};0.5,0.5;$DEFAULT_ASSET_PATH/checkbox_empty.png;.set_creative_enabled_to_1;]
+            @endif:fiii
+            label[0.5,${@j + 0.25};Creative]
+            @set:j:@j + 0.5
+        @else:fii
+            
+        @endif:fii
+        
+        @set:play_str:Play
+        
+        @if:@setting_server:fii
+            @if:@server_enabled:fiii
+                image_button[0,${@j};0.5,0.5;$DEFAULT_ASSET_PATH/checkbox_filled.png;.set_server_enabled_to_0;]
+                @set:play_str:Host server
+            @else:fiii
+                image_button[0,${@j};0.5,0.5;$DEFAULT_ASSET_PATH/checkbox_empty.png;.set_server_enabled_to_1;]
+                @set:play_str:Play
+            @endif:fiii
+
+            label[0.5,${@j + 0.25};Server]
+            @set:j:@j + 0.5
+        @else:fii
+            
+        @endif:fii
+        
+        @set:j:@j + 1
+
+        button[${@WIDTH * 0.05},${@j};${@WIDTH * 0.4},0.75;.overlay_dialog_modconfig;Configure mods]
+        button[${@WIDTH * 0.05},${@j + 1};${@WIDTH * 0.4},0.75;.play;${@play_str}]
+        
         scroll_container_end[]
-        scrollbar[-800,6;0,2;vertical;worldmodsscroll;]
+        scrollbar[-800,6;0,2;vertical;worldconfigscroll;]
     @else:fi
         
     @endif:fi
     scrollbaroptions[arrows=hide]
     scrollbar[-800,6;0,2;vertical;worldscroll;]
 </main>
+<modconfig>
+image[${@WIDTH * 0.05 +-0.1},${@HEIGHT * 0.05 +-0.1};${@WIDTH * 0.4 + 0.2},${@HEIGHT * 0.9 +-0.75};$DEFAULT_ASSET_PATH/btn_bg.png;8,8]
+hypertext[${@WIDTH * 0.05},${@HEIGHT * 0.05};${@WIDTH * 0.4},0.75;;<global valign=middle halign=center><b>Available mods</b>]
+scroll_container[${@WIDTH * 0.05},${@HEIGHT * 0.05 + 0.75};${@WIDTH * 0.4},${@HEIGHT * 0.9 +-1.7};modsscroll;vertical;;0,0]
+    @foreach:@MODS:m
+        @if:@i % 2:sel
+            style[.select_mod_${@name};bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#373530]
+            style[.select_mod_${@name}:hovered;bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#373530]
+            style[.select_mod_${@name}:hovered+focused;bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#373530]
+        @else:sel
+            style[.select_mod_${@name};bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#403e39]
+            style[.select_mod_${@name}:hovered;bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#403e39]
+            style[.select_mod_${@name}:hovered+focused;bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#403e39]
+        @endif:sel
+        button[0,${@i * 0.5 +-0.5};${@WIDTH * 0.4},0.5;.select_mod_${@name};${@name}]
+    @endforeach:m
+scroll_container_end[]
+scrollbar[-800,6;0,2;vertical;modsscroll;]
+
+image[${@WIDTH * 0.55 +-0.1},${@HEIGHT * 0.05 +-0.1};${@WIDTH * 0.4 + 0.2},${@HEIGHT * 0.9 +-0.75};$DEFAULT_ASSET_PATH/btn_bg.png;8,8]
+hypertext[${@WIDTH * 0.55},${@HEIGHT * 0.05};${@WIDTH * 0.4},0.75;;<global valign=middle halign=center><b>Mods for ${@selected_world_name}</b>]
+scroll_container[${@WIDTH * 0.55},${@HEIGHT * 0.05 + 0.75};${@WIDTH * 0.4},${@HEIGHT * 0.9 +-1.7};worldmodsscroll;vertical;;0,0]
+    @foreach:@WORLDMODS:wm
+        @if:@i % 2:sel
+            style[.select_mod_${@name};bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#373530]
+            style[.select_mod_${@name}:hovered;bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#373530]
+            style[.select_mod_${@name}:hovered+focused;bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#373530]
+        @else:sel
+            style[.select_mod_${@name};bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#403e39]
+            style[.select_mod_${@name}:hovered;bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#403e39]
+            style[.select_mod_${@name}:hovered+focused;bgimg=$DEFAULT_ASSET_PATH/white.png;bgimg_middle=0;bgcolor=#403e39]
+        @endif:sel
+        button[0,${@i * 0.5 +-0.5};${@WIDTH * 0.4},0.5;.select_mod_${@name};${@name}]
+    @endforeach:wm
+scroll_container_end[]
+scrollbar[-800,6;0,2;vertical;worldmodsscroll;]
+
+image_button[${@WIDTH * 0.45},${@HEIGHT * 0.5 +-(@WIDTH * 0.1)};${@WIDTH * 0.1},${@WIDTH * 0.1};$DEFAULT_ASSET_PATH/arrow_right.png;.add_mod_to_world;]
+image_button[${@WIDTH * 0.45},${@HEIGHT * 0.5};${@WIDTH * 0.1},${@WIDTH * 0.1};$DEFAULT_ASSET_PATH/arrow_left.png;.remove_mod_from_world;]
+tooltip[.add_mod_to_world;Add mod to world;#444;#aaa]
+tooltip[.remove_mod_from_world;Remove mod from world;#444;#aaa]
+
+button[${@WIDTH * 0.1},${@HEIGHT * 0.95 +-0.75};${@WIDTH * 0.4},0.75;.unoverlay_dialog;Cancel]
+button[${@WIDTH * 0.5},${@HEIGHT * 0.95 +-0.75};${@WIDTH * 0.4},0.75;.unoverlay_dialog;Confirm]
+
+</modconfig>
 <addworld>
     label[2,2;Add World, asset path is $ASSET_PATH]
     button[2,3;3,1;.show_dialog_main;back]
@@ -177,6 +268,15 @@ local function get_game_info(game)
     end
 end
 
+local function get_world_index(path)
+    for i, x in ipairs(minetest.get_worlds()) do
+        if x.path == path then
+            return i
+        end
+    end
+    return -1
+end
+
 local function get_worlds_for_game(id)
     local out = {}
     for _, x in ipairs(minetest.get_worlds()) do
@@ -210,12 +310,50 @@ function get_mods_for_game(id)
     return out
 end
 
+local function get_game_mods(id)
+    local out = {}
+    local base = get_game_info(id).path.."/mods/"
+    for _, x in pairs(minetest.get_dir_list(base, true)) do
+        out[#out +1] = {
+            name = x,
+            path = base..x
+        }
+    end
+    return out
+end
+
 function get_mods_for_world(world)
-    local config = minetest.check_mod_configuration(world)
+    local conf = Settings(world.."/world.mt")
+    local mods = {}
+    local game
+    local game_mods = {}
+    for k, v in pairs(conf:to_table()) do
+        if k == "gameid" then
+            game = v
+        elseif k:sub(1, 9) == "load_mod_" then
+            if v ~= "false" and v ~= "nil" and v then
+                mods[k:sub(10)] = minetest.get_user_path().."/"..v
+            end
+        end
+    end
+    if game then
+        for _, x in ipairs(get_game_mods(game)) do
+            game_mods[x.name] = x.path
+        end
+    end
+    local config = minetest.check_mod_configuration(world, mods)
+--    print(dump(config))
     for _, x in ipairs(config.unsatisfied_mods) do
         x.unsatisfied = true
         config.satisfied_mods[#config.satisfied_mods +1] = x
     end
+    if game then
+        for _, x in ipairs(config.satisfied_mods) do
+            if game_mods[x.name] then
+                x.game_provided = true
+            end
+        end
+    end
     return config.satisfied_mods
 end
 
@@ -503,40 +641,36 @@ local function build_template_dialog(fs, depth)
     local i = 0
     -- "(.-\n?)%s-@foreach:([^:]+):(%l*)\n(.-)\n%s-@endforeach:%3(\n?.*)"
     -- Extract foreach loops
-    local prev = 1
+    local prev = 0
     while i < 1000 do
-        local unfound = 0
-        local a, b, pattern, name, content = fs:find("@foreach:([^:]+):(%w*)\n(.-)\n%s-@endforeach:%2", prev)
+        local fe_start, fe_end, fe_pattern, fe_name, fe_content = fs:find("@foreach:([^:]+):(%w-)\n(.-)\n%s-@endforeach:%2", prev)
+        local if_start, if_end, if_expr, if_name, if_content, else_content = fs:find("@if:([^:]+):(%w-)\n(.-)\n%s-@else:%2\n(.-)\n%s-@endif:%2", prev)
 --        print(string.rep("-", 20)..(depth or 0))
-        if a then
+        if not fe_start and not if_start then break end
+        if fe_start and fe_start < (if_start or math.huge) then
 --            print("for each "..pattern.." ("..name..")\n"..content.."\nend for each ("..name..")")
-            dialog[#dialog +1] = build_template_dialog(fs:sub(prev, a -1), (depth or 0) +1)
+            dialog[#dialog +1] = build_template_dialog(fs:sub(prev +1, fe_start -1), (depth or 0) +1)
             dialog[#dialog +1] = {
-                foreach = pattern:trim(),
-                name = name,
-                content = build_template_dialog(content:trim(), (depth or 0) +1)
+                foreach = fe_pattern:trim(),
+                name = fe_name,
+                content = build_template_dialog(fe_content:trim(), (depth or 0) +1)
             }
-            prev = b
+            prev = fe_end
             i = i +1
-        else
-            unfound = unfound +1
         end
-        local a, b, expr, name, content, else_content = fs:find("@if:([^:]+):(%w*)\n(.-)\n%s-@else:%2\n(.-\n?)@endif:%2", prev)
-        if a then
+        
+        if if_start and if_start < (fe_start or math.huge) then
 --            print("if "..expr.." ("..name..")\n"..content.."\nend if ("..name..")")
-            dialog[#dialog +1] = build_template_dialog(fs:sub(prev +1, a -1), (depth or 0) +1)
+            dialog[#dialog +1] = build_template_dialog(fs:sub(prev +1, if_start -1), (depth or 0) +1)
             dialog[#dialog +1] = {
-                condition = expr:trim(),
-                name = name,
-                content = build_template_dialog(content:trim(), (depth or 0) +1),
+                condition = if_expr:trim(),
+                name = if_name,
+                content = build_template_dialog(if_content:trim(), (depth or 0) +1),
                 else_content = build_template_dialog(else_content:trim(), (depth or 0) +1)
             }
-            prev = b
+            prev = if_end
             i = i +1
-        else
-            unfound = unfound +1
         end
-        if unfound > 1 then break end
     end
 
     if prev > 1 then
@@ -681,6 +815,10 @@ local function evaluate_template_expression(expr, vars, depth)
         vars = {item = vars}
     end
     
+    -- Check for operators early, because variables may contain punctuation when expanded.
+    -- A class is used instead of %p because %p matches @, which is used for variables.
+    local has_operators = expr:find("[|&><=+*/%%^]")
+    
     -- Expand all variables so we can deal with a constexpr.
     local offset = 1
     while offset < 100000 do
@@ -691,6 +829,9 @@ local function evaluate_template_expression(expr, vars, depth)
         expr = expr:sub(1, a -1)..result..expr:sub(b +1)
         offset = a +#result
     end
+
+    -- If there are no operators, this is a constant expression and we can just return.
+    if not has_operators then return expr end
     
     -- Condense sub-expressions.
     local offset = 1
@@ -703,9 +844,6 @@ local function evaluate_template_expression(expr, vars, depth)
         offset = a +#result
     end
     
-    -- If there are no operators, this is a constant expression and we can just return.
-    if not expr:find("%p") then return expr end
-    
     -- Expression parsing
     local tree = split_template_expression(expr)
     return tostring(reduce_template_expression(tree))
@@ -713,23 +851,22 @@ end
 
 -- Do variable interpolation for the given formspec using the provided variable table.
 local function evaluate_template_block(fs, vars)
-    -- Assignment statements
-    local offset = 1
-    while offset < #fs do
-        local a, b, name, expr = fs:find("@set:([%a_]+):([^\n]+)", offset)
-        if not a then break end
-        vars[name] = evaluate_template_expression(expr, vars)
-        fs = fs:sub(1, a -1)..fs:sub(b +1)
-        offset = a
-    end
-    -- Interpolations
-    offset = 1
-    while offset < #fs do
-        local a, b, expr = fs:find("%${([^}]-)}", offset)
-        if not a then break end
-        local result = evaluate_template_expression(expr, vars)
-        fs = fs:sub(1, a -1)..result..fs:sub(b +1)
-        offset = a +#result
+    local offset = 0
+    while offset < 100000 do
+        local s_start, s_end, s_name, s_expr = fs:find("@set:@?([%w_]+):([^\n]+)", offset)
+        local i_start, i_end, i_expr = fs:find("%${([^}]-)}", offset)
+        if not s_start and not i_start then break end
+        if s_start and s_start < (i_start or math.huge) then
+        -- Assignment statements
+            vars[s_name] = evaluate_template_expression(s_expr, vars)
+            fs = fs:sub(1, s_start -1)..fs:sub(s_end +1)
+            offset = s_start
+        elseif i_start then
+        -- Interpolations
+            local result = evaluate_template_expression(i_expr, vars)
+            fs = fs:sub(1, i_start -1)..result..fs:sub(i_end +1)
+            offset = i_start +#result
+        end
     end
     return fs
 end
@@ -747,7 +884,7 @@ local function evaluate_template_foreach(loop, vars)
         elseif var == "MODS" then
             list = get_mods_for_game(state.current_game.id)
         elseif var == "WORLDMODS" then
-            list = state.current_world and get_mods_for_world(state.current_world) or {}
+            list = state.menu_vars.selected_world and get_mods_for_world(state.menu_vars.selected_world) or {}
         else
             list = vars[var]
         end
@@ -777,6 +914,7 @@ local function evaluate_template_conditional(cond, vars)
     else
         out = out..evaluate_game_dialog(cond.else_content, vars).."\n"
     end
+--    print("Evaluated condition `"..cond.condition.."` as "..out)
     return out
 end
 
@@ -889,6 +1027,25 @@ function show_game_menu(args)
     if not game.menu then
         local file = read_file(game.path.."/menu/mainmenu.txt") or default_game_menu
         
+        game.disabled_settings = {}
+        local settings = Settings(game.path.."/game.conf")
+        
+        local disabled_settings = string.split(settings:get("disabled_settings") or "", ",")
+        for _, x in ipairs(disabled_settings) do
+            x = x:trim()
+            if x == "enable_damage" then
+                game.disabled_settings.damage = false
+            elseif x == "!enable_damage" then
+                game.disabled_settings.damage = true
+            elseif x == "creative_mode" then
+                game.disabled_settings.creative = false
+            elseif x == "!creative_mode" then
+                game.disabled_settings.creative = true
+            elseif x == "enable_server" then
+                game.disabled_settings.server = false
+            end
+        end
+        
         local overlays = {}
         local backgrounds = {}
         local headers = {}
@@ -948,6 +1105,12 @@ function show_game_menu(args)
         end
         
         game.menu = build_game_menu(file)
+        
+        state.menu_vars = {}
+        
+        state.menu_vars.setting_damage = game.disabled_settings.damage == nil
+        state.menu_vars.setting_creative = game.disabled_settings.creative == nil
+        state.menu_vars.setting_server = game.disabled_settings.server == nil
     end
     
     if args.show_dialog then
@@ -957,6 +1120,9 @@ function show_game_menu(args)
     elseif args.unoverlay_dialog and #state.menu_current > 1 then
         state.menu_current[#state.menu_current] = nil
     end
+
+    state.menu_vars.WIDTH = size.x
+    state.menu_vars.HEIGHT = size.y
     
     local fs = ""
     
@@ -966,8 +1132,14 @@ function show_game_menu(args)
         "
     end
     
+    
     for i, x in ipairs(state.menu_current) do
-        fs = fs..evaluate_game_dialog(game.menu[x], setmetatable({WIDTH = size.x, HEIGHT = size.y}, {__index = state.menu_vars}))
+        if i > 1 then
+            fs = fs.."\
+            box[0,0;"..size.x..","..size.y..";#0009]\
+            "
+        end
+        fs = fs..evaluate_game_dialog(game.menu[x], state.menu_vars)
     end
 --    print(fs)
     
@@ -1616,7 +1788,17 @@ function minetest.button_handler(data)
         end
     elseif state.loc == "game" then
         for k, v in pairs(data) do
-            if k:sub(1, string.len(".show_dialog_")) == ".show_dialog_" then
+            if k == ".play" then
+                gamedata = {
+                    playername = "singleplayer",
+                    password = "",
+                    address = nil,
+                    port = nil,
+                    selected_world = get_world_index(state.menu_vars.selected_world),
+                    singleplayer = true
+                }
+                minetest.start()
+            elseif k:sub(1, string.len(".show_dialog_")) == ".show_dialog_" then
                 show_game_menu {
                     show_dialog = k:sub(string.len(".show_dialog_>"))
                 }
@@ -1626,13 +1808,31 @@ function minetest.button_handler(data)
                 }
             elseif k:sub(1, string.len(".select_world_")) == ".select_world_" then
                 state.menu_vars.selected_world = k:sub(string.len(".select_world_>"))
+                state.menu_vars.selected_world_name = k:match "/([^/]+)$"  or "<unknown world>"
+                local conf = Settings(state.menu_vars.selected_world.."/world.mt")
+                local de = conf:get("enable_damage")
+                if de == "true" then
+                    state.menu_vars.damage_enabled = true
+                elseif de == "false" then
+                    state.menu_vars.damage_enabled = false
+                else
+                    state.menu_vars.creative_damage = not state.current_game.disabled_settings.damage
+                end
+                local cm = conf:get("creative_mode")
+                if cm == "true" then
+                    state.menu_vars.creative_enabled = true
+                elseif cm == "false" then
+                    state.menu_vars.creative_enabled = false
+                else
+                    state.menu_vars.creative_enabled = not not state.current_game.disabled_settings.creative
+                end
                 show_game_menu()
             elseif k == ".unoverlay_dialog" then
                 show_game_menu {
                     unoverlay_dialog = true
                 }
             elseif k:sub(1, string.len(".set_")) == ".set_" then
-                local name, value = k:match "%.set_(.-)_to_(.*)"
+                local name, value = k:match "%.set_(.+)_to_(.*)"
                 state.menu_vars[name] = value == "" and "0" or value
                 show_game_menu()
             end