diff --git a/main.lua b/main.lua
index 13a5ec2..7a1d0d7 100644
--- a/main.lua
+++ b/main.lua
@@ -14,9 +14,7 @@ Timer = require 'lib/hump/timer'
 
 -- objects --
 Room = require 'obj/Room'
-Circle = require 'obj/Circle'
-Rectangle = require 'obj/Rectangle'
-Polygon = require 'obj/Polygon'
+Area = require 'obj/Area'
 
 function love.load()
     ---@type Room|nil
@@ -48,9 +46,6 @@ end
 function love.update(dt)
     input:update(dt)
     if current_room then current_room:update(dt) end
-    if input:pressed('f1') then gotoRoom('CircleRoom') end
-    if input:pressed('f2') then gotoRoom('RectangleRoom') end
-    if input:pressed('f3') then gotoRoom('PolygonRoom') end
 end
 
 function love.draw()
@@ -103,3 +98,14 @@ function gotoRoom(room_type, ...)
     end
     current_room = _G[room_type](...)
 end
+
+---Generates and returns random UUID string
+---@return string
+function UUID()
+    local fn = function(x)
+        local r = math.random(16) - 1
+        r = (x == "x") and (r + 1) or (r % 4) + 9
+        return ("0123456789abcdef"):sub(r, r)
+    end
+    return (("xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx"):gsub("[xy]", fn))
+end
diff --git a/obj/Area.lua b/obj/Area.lua
new file mode 100644
index 0000000..c9919b8
--- /dev/null
+++ b/obj/Area.lua
@@ -0,0 +1,35 @@
+---@module 'obj/Area'
+
+---@class Area:Object
+---@field room Room
+local Area = Object:extend()
+
+---Instantiates area
+function Area:new(room)
+    self.room = room
+    self.game_objects = {}
+end
+
+---Updates area
+---@param dt number
+function Area:update(dt)
+    for _, game_object in ipairs(self.game_objects) do game_object:update(dt) end
+end
+
+---Draws area
+function Area:draw()
+    for _, game_object in ipairs(self.game_objects) do game_object:draw() end
+end
+
+---Adds game object to area
+---@param game_object_type string name of game object's class
+---@param x number|nil horizontal position
+---@param y number|nil vertical position
+---@param opts table|nil additional arguments
+function Area:addGameObject(game_object_type, x, y, opts)
+    local game_object = _G[game_object_type](self, x or 0, y or 0, opts or {})
+    table.insert(self.game_objects, game_object)
+    return game_object
+end
+
+return Area
diff --git a/obj/Circle.lua b/obj/Circle.lua
deleted file mode 100644
index dc8c91a..0000000
--- a/obj/Circle.lua
+++ /dev/null
@@ -1,21 +0,0 @@
----@class Circle:Object circle object
----@field x number horizontal position of circle
----@field y number vertical position of circle
----@field radius number radius of circle
----@field mode string drawing mode of circle
-local Circle = Object:extend()
-
-function Circle:new(config)
-    self.x = config.x or 400
-    self.y = config.y or 300
-    self.radius = config.radius or 50
-    self.mode = config.mode or "fill"
-end
-
-function Circle:update(dt) end
-
-function Circle:draw()
-    love.graphics.circle(self.mode, self.x, self.y, self.radius)
-end
-
-return Circle
diff --git a/obj/GameObject.lua b/obj/GameObject.lua
new file mode 100644
index 0000000..4d314f3
--- /dev/null
+++ b/obj/GameObject.lua
@@ -0,0 +1,31 @@
+---@module 'obj/GameObject'
+
+---@class GameObject:Object
+---@field area number 
+---@field x number
+---@field y number
+---@field opts table|nil
+local GameObject = Object:extend()
+
+---Instantiates game object
+function GameObject:new(area, x, y, opts)
+    if opts then for k,v in pairs(opts) do self[k] = v end end
+
+    self.area = area
+    self.x = x
+    self.y = y
+    self.id = UUID()
+    self.dead = false
+    self.timer = Timer()
+end
+
+---Updates game object
+---@param dt number
+function GameObject:update(dt)
+    if self.timer then self.timer:update(dt) end
+end
+
+---Draw game object
+function GameObject:draw() end
+
+return GameObject
diff --git a/obj/Polygon.lua b/obj/Polygon.lua
deleted file mode 100644
index cd748ce..0000000
--- a/obj/Polygon.lua
+++ /dev/null
@@ -1,17 +0,0 @@
----@class Polygon:Object Polygon object
----@field mode string drawing mode of Polygon
----@field points any points of Polygon
-local Polygon = Object:extend()
-
-function Polygon:new(mode, ...)
-    self.mode = mode or "fill"
-    self.points = {...} or {100,100, 200,100, 150,200}
-end
-
-function Polygon:update(dt) end
-
-function Polygon:draw()
-    love.graphics.polygon(self.mode, self.points)
-end
-
-return Polygon
diff --git a/obj/Rectangle.lua b/obj/Rectangle.lua
deleted file mode 100644
index 85b81b6..0000000
--- a/obj/Rectangle.lua
+++ /dev/null
@@ -1,23 +0,0 @@
----@class Rectangle:Object Rectangle object
----@field x number horizontal position of Rectangle
----@field y number vertical position of Rectangle
----@field mode string drawing mode of Rectangle
----@field width number width of Rectangle
----@field height number height of Rectangle
-local Rectangle = Object:extend()
-
-function Rectangle:new(config)
-    self.x = config.x or 400
-    self.y = config.y or 300
-    self.mode = config.mode or "fill"
-    self.width = config.width or 100
-    self.height = config.height or 60
-end
-
-function Rectangle:update(dt) end
-
-function Rectangle:draw()
-    love.graphics.rectangle(self.mode, self.x, self.y, self.width, self.height)
-end
-
-return Rectangle
diff --git a/rooms/CircleRoom.lua b/rooms/CircleRoom.lua
deleted file mode 100644
index 352f5c6..0000000
--- a/rooms/CircleRoom.lua
+++ /dev/null
@@ -1,29 +0,0 @@
----@class CircleRoom:Room
----@field circle Circle
----@field super Room
----@field radtween number
----@field timer Timer
-local CircleRoom = Room:extend()
-
-function CircleRoom:new()
-    CircleRoom.super.new(self)
-    self.radtween = 50
-    self.circle = Circle{radius = self.radtween}
-    self.timer = Timer()
-end
-
-function CircleRoom:update(dt)
-    CircleRoom.super.update(self, dt)
-    if input:pressed('action') then
-        self.timer:tween(1, self.circle, {radius = 100}, 'in-out-cubic')
-    end
-    self.circle:update(dt)
-    self.timer:update(dt)
-end
-
-function CircleRoom:draw()
-    CircleRoom.super.draw(self)
-    self.circle:draw()
-end
-
-return CircleRoom
diff --git a/rooms/PolygonRoom.lua b/rooms/PolygonRoom.lua
deleted file mode 100644
index 1b7f6d1..0000000
--- a/rooms/PolygonRoom.lua
+++ /dev/null
@@ -1,27 +0,0 @@
----@class PolygonRoom:Room
----@field polygon Polygon
----@field super Room
----@field timer Timer
-local PolygonRoom = Room:extend()
-
-function PolygonRoom:new()
-    PolygonRoom.super.new(self)
-    self.polygon = Polygon('fill', 100,100, 200,100, 150,200)
-    self.timer = Timer()
-end
-
-function PolygonRoom:update(dt)
-    PolygonRoom.super.update(self, dt)
-    if input:pressed('action') then
-        self.polygon.mode = 'line'
-    end
-    self.polygon:update(dt)
-    self.timer:update(dt)
-end
-
-function PolygonRoom:draw()
-    PolygonRoom.super.draw(self)
-    self.polygon:draw()
-end
-
-return PolygonRoom
diff --git a/rooms/RectangleRoom.lua b/rooms/RectangleRoom.lua
deleted file mode 100644
index 215288c..0000000
--- a/rooms/RectangleRoom.lua
+++ /dev/null
@@ -1,27 +0,0 @@
----@class RectangleRoom:Room
----@field rectangle Rectangle
----@field super Room
----@field timer Timer
-local RectangleRoom = Room:extend()
-
-function RectangleRoom:new()
-    RectangleRoom.super.new(self)
-    self.rectangle = Rectangle{}
-    self.timer = Timer()
-end
-
-function RectangleRoom:update(dt)
-    RectangleRoom.super.update(self, dt)
-    if input:pressed('action') then
-        self.timer:tween(1, self.rectangle, {width = 50}, 'in-out-cubic')
-    end
-    self.rectangle:update(dt)
-    self.timer:update(dt)
-end
-
-function RectangleRoom:draw()
-    RectangleRoom.super.draw(self)
-    self.rectangle:draw()
-end
-
-return RectangleRoom