diff --git a/conf.lua b/conf.lua
index 360aaf9..cea3ce0 100644
--- a/conf.lua
+++ b/conf.lua
@@ -3,7 +3,7 @@ title = "hexyz"
 author = "nick hayashi"
 shortname = "hexyz"
 version = "0.1.1"
-support_email = "hayashi.nicholas@gmail.com"
+support_email = ""
 copyright_message = "Copyright © 2021 Nick Hayashi"
 
 dev_region = "en"
diff --git a/main.lua b/main.lua
index 8e3ffa5..831d97b 100644
--- a/main.lua
+++ b/main.lua
@@ -44,6 +44,16 @@ require "src/projectile"
 require "src/tower"
 
 
+function alert(message)
+    win.scene:append(
+        am.scale(3) ^ am.text(message)
+        :action(coroutine.create(function(self)
+            am.wait(am.tween(self, 1, { color = vec4(0) }))
+            win.scene:remove(self)
+        end))
+    )
+end
+
 function main_action(self)
     if win:key_pressed("escape") then
         if win.scene("game") then
@@ -59,6 +69,7 @@ function main_action(self)
 end
 
 function make_main_scene_toolbelt()
+    local include_save_option = game
     local options = {
         false,
         false,
@@ -71,6 +82,14 @@ function make_main_scene_toolbelt()
             end
         },
         false,
+        include_save_option and {
+            texture = TEXTURES.SAVE_GAME_HEX,
+            action = function()
+                game_save()
+                alert("succesfully saved!")
+            end
+        } or false,
+        false,
         {
             texture = TEXTURES.LOAD_GAME_HEX,
             action = function()
@@ -78,8 +97,7 @@ function make_main_scene_toolbelt()
                 game_init(am.load_state("save", "json"))
             end
         },
-        false,
-        false,
+
         false,
         {
             texture = TEXTURES.MAP_EDITOR_HEX,
@@ -109,6 +127,8 @@ function make_main_scene_toolbelt()
     local hvs = hex_vertical_spacing(spacing)
     local grid_pixel_width = grid_width * hhs
     local grid_pixel_height = grid_height * hvs
+    -- @TODO the vertical offset should be different depending on if this is the main menu or the pause menu
+    -- perhaps the map that makes the grid of hexes should be different as well
     local pixel_offset = vec2(-grid_pixel_width/2, win.bottom + hex_height(spacing)/2 + 20)
 
     local map = hex_rectangular_map(grid_width, grid_height, HEX_ORIENTATION.POINTY)
@@ -161,7 +181,7 @@ function make_main_scene_toolbelt()
     return am.translate(pixel_offset) ^ group
 end
 
-function main_scene(do_backdrop)
+function main_scene(do_backdrop, do_logo)
     local group = am.group()
 
     if do_backdrop then
@@ -173,7 +193,7 @@ function main_scene(do_backdrop)
                 color = color{a=color.a - 0.1}
 
                 local node = am.translate(hex_to_pixel(vec2(i, j), vec2(HEX_SIZE)))
-                            ^ am.circle(vec2(0), HEX_SIZE, vec4(0), 6)
+                             ^ am.circle(vec2(0), HEX_SIZE, vec4(0), 6)
 
                 node"circle":action(am.tween(0.6, { color = color }))
 
@@ -190,8 +210,12 @@ function main_scene(do_backdrop)
         ^ am.text(version, COLORS.WHITE, "right")
     )
 
-    local logo_height = 480
-    group:append(am.translate(0, win.top - 20 - logo_height/2) ^ am.sprite("res/logo.png"))
+    if do_logo then
+        group:append(
+            am.translate(0, win.top - 20 - TEXTURES.LOGO.height/2)
+            ^ pack_texture_into_sprite(TEXTURES.LOGO, TEXTURES.LOGO.width, TEXTURES.LOGO.height)
+        )
+    end
 
     group:append(make_main_scene_toolbelt())
 
@@ -201,7 +225,7 @@ function main_scene(do_backdrop)
 end
 
 win.scene = am.group(
-    main_scene(true)
+    main_scene(true, true)
 )
 noglobals()
 
diff --git a/res/savegamehex.png b/res/savegamehex.png
new file mode 100644
index 0000000..fa5ee75
Binary files /dev/null and b/res/savegamehex.png differ
diff --git a/src/entity.lua b/src/entity.lua
index 4f4d628..b04d396 100644
--- a/src/entity.lua
+++ b/src/entity.lua
@@ -55,12 +55,6 @@ function delete_entity(t, index)
     t[index] = false -- leave empty indexes so other entities can learn that this entity was deleted
 end
 
-function delete_all_entities()
-    delete_all_mobs()
-    delete_all_towers()
-    delete_all_projectiles()
-end
-
 function do_entity_updates()
     do_mob_updates()
     do_tower_updates()
diff --git a/src/game.lua b/src/game.lua
index cce1442..c30a5c5 100644
--- a/src/game.lua
+++ b/src/game.lua
@@ -1,10 +1,14 @@
 
 
+game = false -- flag to tell if there is a game running
 state = {}
 
-function game_end(saved_state)
-    delete_all_entities()
-    game_init(saved_state)
+function game_end()
+    state = {}
+    game = false
+
+    -- @TODO
+
 end
 
 function update_score(diff) state.score = state.score + diff end
@@ -45,7 +49,7 @@ local function get_initial_game_state(seed)
         time_until_next_wave = 0,
         time_until_next_break = 0,
         spawning = false,
-        spawn_chance = 0.01,
+        spawn_chance = 0.002,
         last_mob_spawn_time = 0,
 
         selected_tower_type = false,
@@ -88,16 +92,6 @@ local function get_top_right_display_text(hex, evenq, centered_evenq, display_ty
     return str
 end
 
-function alert(message)
-    win.scene:append(
-        am.scale(3) ^ am.text(message)
-        :action(coroutine.create(function(self)
-            am.wait(am.tween(self, 1, { color = vec4(0) }))
-            win.scene:remove(self)
-        end))
-    )
-end
-
 -- initialized later, as part of the init of the toolbelt
 local function select_tower_type(tower_type) end
 local function select_toolbelt_button(i) end
@@ -118,7 +112,7 @@ end
 local function game_pause()
     win.scene("game").paused = true
 
-    win.scene:append(main_scene(false))
+    win.scene:append(main_scene(false, false))
 end
 
 local function game_deserialize(json_string)
@@ -202,7 +196,7 @@ local function game_serialize()
     return am.to_json(serialized)
 end
 
-local function game_save()
+function game_save()
     am.save_state("save", game_serialize(), "json")
     log("succesfully saved!")
 end
@@ -302,10 +296,6 @@ local function game_action(scene)
     elseif win:key_pressed"f3" then
         game_save()
 
-    elseif win:key_pressed"f4" then
-        game_end(am.load_state("save", "json"))
-        return true
-
     elseif win:key_pressed"tab" then
         if win:key_down"lshift" then
             select_toolbelt_button((state.selected_toolbelt_button + table.count(TOWER_TYPE) - 2) % table.count(TOWER_TYPE) + 1)
@@ -381,7 +371,7 @@ local function make_game_toolbelt()
         return button
     end
 
-    local toolbelt_height = hex_height(HEX_SIZE) * 2
+    local toolbelt_height = win.height * 0.08
     local function get_tower_tooltip_text_node(tower_type)
         local name = get_tower_name(tower_type)
         local placement_rules = get_tower_placement_rules_text(tower_type)
@@ -392,7 +382,7 @@ local function make_game_toolbelt()
             return am.group():tag"tower_tooltip_text"
         end
 
-        local color = COLORS.PALE_SILVER
+        local color = COLORS.WHITE
         return (am.translate(win.left + 10, win.bottom + toolbelt_height + 20)
             ^ am.group{
                 am.translate(0, 60)
@@ -566,6 +556,7 @@ function game_init(saved_state)
         end
     end
 
+    game = true
     win.scene:remove("game")
     win.scene:append(game_scene())
 end
diff --git a/src/hexyz.lua b/src/hexyz.lua
index 9e38bbe..122e658 100644
--- a/src/hexyz.lua
+++ b/src/hexyz.lua
@@ -44,7 +44,7 @@ local HEX_DEFAULT_ORIENTATION = HEX_ORIENTATION.FLAT
 
 -- whenever |size| for a hexagon appears as an argument, if it isn't provided, use this
 -- 'size' here is distance from the centerpoint to any vertex in pixel
-local HEX_DEFAULT_SIZE = vec2(20)
+local HEX_DEFAULT_SIZE = vec2(26)
 
 -- actual width (longest contained horizontal line) of the hexagon
 function hex_width(size, orientation)
diff --git a/src/mob.lua b/src/mob.lua
index 60b859e..c41c3d3 100644
--- a/src/mob.lua
+++ b/src/mob.lua
@@ -72,6 +72,11 @@ function mob_die(mob, mob_index)
     delete_entity(state.mobs, mob_index)
 end
 
+function mob_reach_center(mob, mob_index)
+    update_score(-(mob.health + mob.bounty))
+    delete_entity(state.mobs, mob_index)
+end
+
 local HEALTHBAR_WIDTH = HEX_PIXEL_WIDTH/2
 local HEALTHBAR_HEIGHT = HEALTHBAR_WIDTH/4
 function do_hit_mob(mob, damage, mob_index)
@@ -148,8 +153,7 @@ local function resolve_frame_target_for_mob(mob, mob_index)
     mob.hex = pixel_to_hex(mob.position, vec2(HEX_SIZE))
 
     if mob.hex == HEX_GRID_CENTER then
-        update_score(-mob.health)
-        mob_die(mob, mob_index)
+        mob_reach_center(mob, mob_index)
         return true
     end
 
@@ -320,29 +324,19 @@ local function can_spawn_mob()
     end
 
     if math.random() <= state.spawn_chance then
-        --log('yes %f', state.spawn_chance)
         state.last_mob_spawn_time = state.time
         return true
     else
-        --log('no %f', state.spawn_chance)
         return false
     end
 end
 
 function do_mob_spawning()
-    --if win:key_pressed"space" then
     if can_spawn_mob() then
-    --if #state.mobs < 1 then
         make_and_register_mob(MOB_TYPE.BEEPER)
     end
 end
 
-function delete_all_mobs()
-    for mob_index,mob in pairs(state.mobs) do
-        if mob then delete_entity(state.mobs, mob_index) end
-    end
-end
-
 function do_mob_updates()
     for mob_index,mob in pairs(state.mobs) do
         if mob and mob.update then
diff --git a/src/projectile.lua b/src/projectile.lua
index 0b01dc1..af0e135 100644
--- a/src/projectile.lua
+++ b/src/projectile.lua
@@ -236,12 +236,6 @@ function projectile_deserialize(json_string)
     return projectile
 end
 
-function delete_all_projectiles()
-    for projectile_index,projectile in pairs(state.projectiles) do
-        if projectile then delete_entity(state.projectiles, projectile_index) end
-    end
-end
-
 function do_projectile_updates()
     for projectile_index,projectile in pairs(state.projectiles) do
         if projectile and projectile.update then
diff --git a/src/tower.lua b/src/tower.lua
index 504dc45..cea96dd 100644
--- a/src/tower.lua
+++ b/src/tower.lua
@@ -511,12 +511,6 @@ function build_tower(hex, tower_type)
     return tower
 end
 
-function delete_all_towers()
-    for tower_index,tower in pairs(state.towers) do
-        if tower then delete_entity(state.towers, tower_index) end
-    end
-end
-
 function do_tower_updates()
     for tower_index,tower in pairs(state.towers) do
         if tower and tower.update then
diff --git a/texture.lua b/texture.lua
index d37e243..ada6fce 100644
--- a/texture.lua
+++ b/texture.lua
@@ -16,6 +16,7 @@ TEXTURES = {
     SHADED_HEX              = load_texture("res/shaded_hex.png"),
 
     NEW_GAME_HEX            = load_texture("res/newgamehex.png"),
+    SAVE_GAME_HEX           = load_texture("res/savegamehex.png"),
     LOAD_GAME_HEX           = load_texture("res/loadgamehex.png"),
     SETTINGS_HEX            = load_texture("res/settingshex.png"),
     MAP_EDITOR_HEX          = load_texture("res/mapeditorhex.png"),