diff --git a/CHANGELOG.md b/CHANGELOG.md
index fb82064..0a9482c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -15,9 +15,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Add a gamesystem module
 
-- **core/debug:** add log functions
-
-- **core:** add a way to activate easily debug mode directly
+- **core/debug:** new logging framework
 
 - **camera+maps:** add a way to add padding to map limits
 
diff --git a/birb/core/debug.lua b/birb/core/debug.lua
index 53d62f2..7259a24 100644
--- a/birb/core/debug.lua
+++ b/birb/core/debug.lua
@@ -1,4 +1,4 @@
--- core/debug.lua :: Debug functions for the core system.
+-- core/debug.lua :: A basic framework for debug.
 
 --[[
   Copyright © 2019 Kazhnuz
@@ -25,36 +25,115 @@ local DebugSystem = Object:extend()
 
 local lovebird = require("birb.libs.lovebird")
 
-function DebugSystem:new(controller, active)
-  self.controller = controller
-  lovebird.update()
-  self.active = active or false
+local ERROR = 0
+local WARN = 1
+local INFO = 2
+local DEBUG = 3
+
+--- Create a new DebugSystem.
+-- It allow you to determinate the debug level of the game.
+-- @param controller the birb core
+-- @param debugLevel the debug mode level
+function DebugSystem:new(controller, debugLevel)
+  self.core = controller
+  self.debugLevel = debugLevel or 0
+
+  self:updateUI()
 end
 
+--- Update the DebugSystem.
+-- @param dt the delta time
 function DebugSystem:update(dt)
-  lovebird.update(dt)
+  self:updateUI(dt)
+end
+
+--- Update the lovebird UI if the debug level is debug.
+-- @param dt the delta time
+function DebugSystem:updateUI(dt)
+  if (self:isDebug()) then
+    lovebird.update(dt)
+  end
+end
+
+-- TEST FUNCTIONS
+-- Simple warper to get easily the debug level
+
+--- Test if debug level is "DEBUG"
+-- @return true if the debug level is "DEBUG"
+function DebugSystem:isDebug()
+  return (self.debugLevel >= DEBUG)
+end
+
+--- Test if debug level is "INFO"
+-- @return true if the debug level is "INFO"
+function DebugSystem:isInfo()
+  return (self.debugLevel >= INFO)
+end
+
+--- Test if debug level is "WARN"
+-- @return true if the debug level is "WARN"
+function DebugSystem:isWarn()
+  return (self.debugLevel >= WARN)
+end
+
+--- Test if debug level is "ERROR"
+-- @return true if the debug level is "ERROR"
+function DebugSystem:isError()
+  return (self.debugLevel >= ERROR)
 end
 
 -- PRINT FUNCTIONS
 -- Print and log debug string
 
-function DebugSystem:print(context, string)
-  if (self.active) then
-    print("[DEBUG] ".. context .. ": " .. string)
+--- Log a debug line
+--
+-- @param context the context of the log
+-- @param string the logged string
+function DebugSystem:logDebug(context, string)
+  if (self:isDebug()) then
+    print(self:createLogLine("DEBUG", context, string))
   end
 end
 
-function DebugSystem:warning(context, string)
-  if (self.active) then
-    print("[WARNING] " .. context .. ": " .. string)
+--- Log an info
+--
+-- @param context the context of the log
+-- @param string the logged string
+function DebugSystem:logInfo(context, string)
+  if (self:isInfo()) then
+    print(self:createLogLine("INFO", context, string))
   end
 end
 
-function DebugSystem:error(context, string)
-  if (self.active) then
-    error("[ERROR] " .. context .. ": " .. string)
+--- Log a warning
+--
+-- @param context the context of the log
+-- @param string the logged string
+function DebugSystem:logWarn(context, string)
+  if (self:isWarn()) then
+    print(self:createLogLine("WARNING", context, string))
   end
 end
 
+--- Log an error
+--
+-- @param context the context of the log
+-- @param string the logged string
+function DebugSystem:logError(context, string)
+  if (self:isError()) then
+    print(self:createLogLine("ERROR", context, string))
+  end
+end
+
+--- Create a formatted debug line
+--
+-- @param level the level of the log
+-- @param context the context of the log
+-- @param string the logged string
+-- @return the debug line
+function DebugSystem:createLogLine(level, context, string)
+  local head = "BIRB" .. "|" .. os.date("%x-%X") .. "|"
+  return head .. level .. "|" .. context .. ": " .. string;
+end
 
 return DebugSystem
diff --git a/birb/core/init.lua b/birb/core/init.lua
index 21dd59e..9572ba3 100644
--- a/birb/core/init.lua
+++ b/birb/core/init.lua
@@ -37,15 +37,17 @@ local SceneManager  = require(cwd .. "scenemanager")
 -- INIT FUNCTIONS
 -- Initialize and configure the core object
 
-function CoreSystem:new(DEBUGMODE)
+function CoreSystem:new(debugLevel)
   self.modules  = birb.modules
 
-  self.debug    = DebugSystem(self, DEBUGMODE)
+  self.debug    = DebugSystem(self, debugLevel)
   self.options  = Options(self)
   self.input    = Input(self)
   self.screen   = Screen(self)
   self.scenemanager = SceneManager(self)
   self.lang         = Lang(self)
+
+  self.debug:logDebug("birbcore","Birb initialized")
 end
 
 function CoreSystem:registerGameSystem(gamesystem)
diff --git a/birb/core/input.lua b/birb/core/input.lua
index 4653aa1..b8d0c70 100644
--- a/birb/core/input.lua
+++ b/birb/core/input.lua
@@ -142,7 +142,7 @@ function VirtualPad:isDown(key)
     isdown = love.keyboard.isDown(self.data.keys[key])
   else
     local warnstring = "unsupported input device " .. self.type .. " for source " .. self.id
-    core.debug:warning("core/input", warnstring)
+    core.debug:logWarn("core/input", warnstring)
   end
 
   return isdown
@@ -158,13 +158,13 @@ function VirtualPad:checkKey(key)
   local isDown = self:isDown(key)
   if (isDown) then
     if not (self.keys[key].isDown) then
-      core.debug:print("virtualpad", "key " .. key .. " is Pressed")
+      core.debug:logDebug("virtualpad", "key " .. key .. " is Pressed")
       self.keys[key].isDown     = true
       self.keys[key].isPressed  = true
       self.keys[key].isReleased = false
     else
       if (self.keys[key].isPressed) then
-        core.debug:print("virtualpad", "key " .. key .. " is Down")
+        core.debug:logDebug("virtualpad", "key " .. key .. " is Down")
         self.keys[key].isPressed = false
       end
     end
@@ -175,7 +175,7 @@ function VirtualPad:checkKey(key)
       self.keys[key].isReleased = true
     else
       if (self.keys[key].isReleased) then
-        core.debug:print("virtualpad", "key " .. key .. " is Released")
+        core.debug:logDebug("virtualpad", "key " .. key .. " is Released")
         self.keys[key].isReleased = false
       end
     end
diff --git a/birb/core/lang.lua b/birb/core/lang.lua
index 260c82d..1d8fb50 100644
--- a/birb/core/lang.lua
+++ b/birb/core/lang.lua
@@ -95,7 +95,7 @@ function LanguageManager:getTranslationStringList(lang, library)
   if fileinfo ~= nil then
     list = require(_path)
   else
-    core.debug:warning("core/lang","file " .. _path .. " do not exists")
+    core.debug:logWarn("core/lang","file " .. _path .. " do not exists")
   end
 
   return list
@@ -120,7 +120,7 @@ function LanguageManager:translate(library, string)
 
   if (translation == nil) then
     translation = string
-    core.debug:warning("core/lang", "no translation path found for " .. string .. " in " .. library)
+    core.debug:logWarn("core/lang", "no translation path found for " .. string .. " in " .. library)
   end
 
   return translation
diff --git a/birb/core/options.lua b/birb/core/options.lua
index 0067e62..a137df0 100644
--- a/birb/core/options.lua
+++ b/birb/core/options.lua
@@ -151,11 +151,11 @@ function OptionsManager:read()
   filepath = self:getFile(true)
   if utils.filesystem.exists("options.data") then
     local loadedDatas = binser.readFile(filepath)
-    self.controller.debug:print("core/options", "data file found, loading it")
+    self.controller.debug:logInfo("core/options", "data file found, loading it")
     self:setData(loadedDatas[1])
   else
     self:reset()
-    self.controller.debug:print("core/options", "no data file found, reseting data")
+    self.controller.debug:logInfo("core/options", "no data file found, reseting data")
   end
 end
 
diff --git a/birb/init.lua b/birb/init.lua
index a43f79f..f0e7f8e 100644
--- a/birb/init.lua
+++ b/birb/init.lua
@@ -34,8 +34,8 @@ utils   = require("birb.utils")
 birb.modules = require("birb.modules")
 birb.Core = require("birb.core")
 
-function birb.startCore()
-  core = birb.Core(true)
+function birb.startCore(debugLevel)
+  core = birb.Core(debugLevel)
 end
 
 require("birb.callbacks")
diff --git a/birb/modules/assets/animator.lua b/birb/modules/assets/animator.lua
index 9a42ba8..c5e322f 100644
--- a/birb/modules/assets/animator.lua
+++ b/birb/modules/assets/animator.lua
@@ -48,7 +48,7 @@ end
 
 function Animator:update(dt)
   if (self.currentAnimation == "") then
-    core.debug:warning("animator", "no current animation data")
+    core.debug:logWarn("animator", "no current animation data")
     return 0
   end
 
diff --git a/birb/modules/assets/init.lua b/birb/modules/assets/init.lua
index 8dd7fb4..84b0e86 100644
--- a/birb/modules/assets/init.lua
+++ b/birb/modules/assets/init.lua
@@ -90,7 +90,7 @@ function Assets:batchImport(datafile)
     elseif (asset_type == "sfx") then
       self:importSFX(assets)
     else
-      core.debug:warning("assets/importer", "unkown asset type " .. asset_type)
+      core.debug:logWarn("assets/importer", "unkown asset type " .. asset_type)
     end
   end
 end
diff --git a/birb/modules/scenes.lua b/birb/modules/scenes.lua
index c615f6f..4cd67f5 100644
--- a/birb/modules/scenes.lua
+++ b/birb/modules/scenes.lua
@@ -151,12 +151,12 @@ end
 
 function Scene:getKeys(sourceid)
   if sourceid == nil then
-    core.debug:warning("scene", "no sourceid detected, will default to 1")
+    core.debug:logWarn("scene", "no sourceid detected, will default to 1")
   end
 
   local sourceid = sourceid or 1
   if (self.inputLocked) or (not self.isActive) then
-    core.debug:print("scene", "inputs are currently locked")
+    core.debug:logDebug("scene", "inputs are currently locked")
     return core.input.fakekeys
   else
     return self.sources[sourceid].keys
diff --git a/birb/modules/timers/init.lua b/birb/modules/timers/init.lua
index 50206f4..4ea7e20 100644
--- a/birb/modules/timers/init.lua
+++ b/birb/modules/timers/init.lua
@@ -60,7 +60,7 @@ end
 
 function TimersManager:timerResponse(timername)
   if self.subject.timerResponse == nil then
-    core.debug:warning("TimersManager", "the subject have no timerResponse function")
+    core.debug:logWarn("TimersManager", "the subject have no timerResponse function")
     return 0
   end
   self.subject:timerResponse(timername)
diff --git a/birb/modules/world/actors/actor2D.lua b/birb/modules/world/actors/actor2D.lua
index 5038eb7..0dedb5e 100644
--- a/birb/modules/world/actors/actor2D.lua
+++ b/birb/modules/world/actors/actor2D.lua
@@ -163,7 +163,7 @@ end
 
 function Actor2D:addHitbox(name, type, ox, oy, w, h, isSolid)
   if (self.hitboxes[name] ~= nil) then
-    core.debug:warning("actor2D", "the hitbox " .. name .. " already exists")
+    core.debug:logWarn("actor2D", "the hitbox " .. name .. " already exists")
   else
     local hitbox = Hitbox(self, type, ox, oy, w, h, isSolid)
     self.hitboxes[name] = hitbox
diff --git a/birb/modules/world/actors/actor3D.lua b/birb/modules/world/actors/actor3D.lua
index e00786e..c7eab0f 100644
--- a/birb/modules/world/actors/actor3D.lua
+++ b/birb/modules/world/actors/actor3D.lua
@@ -187,7 +187,7 @@ end
 
 function Actor3D:addHitbox(name, type, ox, oy, oz, w, h, d, isSolid)
   if (self.hitboxes[name] ~= nil) then
-    core.debug:warning("actor3D", "the hitbox " .. name .. " already exists")
+    core.debug:logWarn("actor3D", "the hitbox " .. name .. " already exists")
   else
     local hitbox = Hitbox(self, type, ox, oy, oz, w, h, d, isSolid)
     self.hitboxes[name] = hitbox
diff --git a/birb/modules/world/actors/baseactor.lua b/birb/modules/world/actors/baseactor.lua
index a639b40..a119c5d 100644
--- a/birb/modules/world/actors/baseactor.lua
+++ b/birb/modules/world/actors/baseactor.lua
@@ -234,7 +234,7 @@ function BaseActor:initTimers()
 end
 
 function BaseActor:addTimer(name, t)
-  core.debug:warning("actor", "function actor:addTimer is deprecated, prefer actor.timers:newTimer")
+  core.debug:logWarn("actor", "function actor:addTimer is deprecated, prefer actor.timers:newTimer")
   self.timers:newTimer(t, name)
 end
 
@@ -373,7 +373,7 @@ end
 
 function BaseActor:changeAnimation(animation, restart)
   if (self.sprite ~= nil) then
-    core.debug:warning("actor", "the function BaseActor:changeAnimation is deprecated, prefer BaseActor.sprite:changeAnimation()")
+    core.debug:logWarn("actor", "the function BaseActor:changeAnimation is deprecated, prefer BaseActor.sprite:changeAnimation()")
     self.sprite:changeAnimation(animation, restart)
   end
 end
@@ -384,7 +384,7 @@ end
 
 function BaseActor:setCustomSpeed(customSpeed)
   if (self.sprite ~= nil) then
-    core.debug:warning("actor", "the function BaseActor:setCustomSpeed is deprecated, prefer BaseActor.sprite:setCustomSpeed()")
+    core.debug:logWarn("actor", "the function BaseActor:setCustomSpeed is deprecated, prefer BaseActor.sprite:setCustomSpeed()")
     self.sprite:setCustomSpeed(customSpeed)
   end
 end
@@ -397,33 +397,33 @@ end
 
 function BaseActor:getCurrentAnimation()
   if (self.sprite ~= nil) then
-    core.debug:warning("actor", "the function BaseActor:getCurrentAnimation is deprecated, prefer BaseActor.sprite:getCurrentAnimation()")
+    core.debug:logWarn("actor", "the function BaseActor:getCurrentAnimation is deprecated, prefer BaseActor.sprite:getCurrentAnimation()")
     return self.sprite:getCurrentAnimation()
   end
 end
 
 function BaseActor:getSpriteScalling()
-  core.debug:warning("actor", "the function BaseActor:getSpriteScalling is deprecated, prefer BaseActor.sprite:getScalling()")
+  core.debug:logWarn("actor", "the function BaseActor:getSpriteScalling is deprecated, prefer BaseActor.sprite:getScalling()")
   return self.sprite:getScalling()
 end
 
 function BaseActor:getFrame()
   if (self.sprite ~= nil) then
-    core.debug:warning("actor", "the function BaseActor:getFrame is deprecated, prefer BaseActor.sprite:getFrame()")
+    core.debug:logWarn("actor", "the function BaseActor:getFrame is deprecated, prefer BaseActor.sprite:getFrame()")
     return self.sprite:getFrame()
   end
 end
 
 function BaseActor:getRelativeFrame()
   if (self.sprite ~= nil) then
-    core.debug:warning("actor", "the function BaseActor:getRelativeFrame is deprecated, prefer BaseActor.sprite:getRelativeFrame()")
+    core.debug:logWarn("actor", "the function BaseActor:getRelativeFrame is deprecated, prefer BaseActor.sprite:getRelativeFrame()")
     return self.sprite:getRelativeFrame()
   end
 end
 
 function BaseActor:getAnimationDuration()
   if (self.sprite ~= nil) then
-    core.debug:warning("actor", "the function BaseActor:getAnimationDuration is deprecated, prefer BaseActor.sprite:getAnimationDuration()")
+    core.debug:logWarn("actor", "the function BaseActor:getAnimationDuration is deprecated, prefer BaseActor.sprite:getAnimationDuration()")
     return self.sprite:getAnimationDuration()
   end
 end
diff --git a/birb/modules/world/actors/gfx2D.lua b/birb/modules/world/actors/gfx2D.lua
index 955170a..666369f 100644
--- a/birb/modules/world/actors/gfx2D.lua
+++ b/birb/modules/world/actors/gfx2D.lua
@@ -33,7 +33,7 @@ function GFX:new(world, x, y, spritename)
 end
 
 function GFX:animationEnded(animation)
-  core.debug:print("gfx2D", 'Current animation "' .. animation .. '" have ended, destroying gfx')
+  core.debug:logDebug("gfx2D", 'Current animation "' .. animation .. '" have ended, destroying gfx')
   self:destroy()
 end
 
diff --git a/birb/modules/world/actors/gfx3D.lua b/birb/modules/world/actors/gfx3D.lua
index 5bc465b..868cdc4 100644
--- a/birb/modules/world/actors/gfx3D.lua
+++ b/birb/modules/world/actors/gfx3D.lua
@@ -33,7 +33,7 @@ function GFX:new(world, x, y, z, spritename)
 end
 
 function GFX:animationEnded(animation)
-  core.debug:print("gfx2D", 'Current animation "' .. animation .. '" have ended, destroying gfx')
+  core.debug:logDebug("gfx3D", 'Current animation "' .. animation .. '" have ended, destroying gfx')
   self:destroy()
 end
 
diff --git a/birb/modules/world/actors/utils/boxes/mapped.lua b/birb/modules/world/actors/utils/boxes/mapped.lua
index e733cab..dc0cc04 100644
--- a/birb/modules/world/actors/utils/boxes/mapped.lua
+++ b/birb/modules/world/actors/utils/boxes/mapped.lua
@@ -37,7 +37,7 @@ end
 
 function MappedBox:drawTextureContent()
   local tx, ty = self.x, self.y - (self.z + self.d)
-  core.debug:print("mappedbox", "getting map layers at position " .. tx .. ";" .. ty)
+  core.debug:logInfo("mappedbox", "getting map layers at position " .. tx .. ";" .. ty)
   love.graphics.push()
   love.graphics.origin()
   love.graphics.translate(math.floor(-tx), math.floor(-ty))
diff --git a/birb/modules/world/baseworld.lua b/birb/modules/world/baseworld.lua
index 3804867..35b0cdb 100644
--- a/birb/modules/world/baseworld.lua
+++ b/birb/modules/world/baseworld.lua
@@ -104,7 +104,7 @@ end
 
 function BaseWorld:newActor(name, x, y, z)
   local debugstring  = " at (" .. x .. ";" .. y .. ")."
-  core.debug:print("world2D", "adding actor " .. name .. debugstring)
+  core.debug:logInfo("world2D", "adding actor " .. name .. debugstring)
   self.obj.index[name](self, x, y)
 end
 
@@ -112,7 +112,7 @@ function BaseWorld:newCollision(name, x, y, z, w, h, d)
   local debugstringpos  = "at (" .. x .. ";" .. y .. ")"
   local debugstringsize = "size is (" .. w .. ";" .. h .. ")"
   local debugstring     = " " .. debugstringpos .. ". " .. debugstringsize .. "."
-  core.debug:print("world2D", "creating collision " .. name .. debugstring)
+  core.debug:logInfo("world2D", "creating collision " .. name .. debugstring)
   self.obj.collisions[name](self, x, y, w, h)
 end
 
diff --git a/birb/modules/world/camera/init.lua b/birb/modules/world/camera/init.lua
index 9a136c4..b5e4943 100644
--- a/birb/modules/world/camera/init.lua
+++ b/birb/modules/world/camera/init.lua
@@ -50,7 +50,7 @@ end
 
 function CameraSystem:setMode(mode)
   self.mode = mode
-  core.debug:print("camera", "mode is now set to " .. mode)
+  core.debug:logInfo("camera", "mode is now set to " .. mode)
   return mode
 end
 
diff --git a/birb/modules/world/maps/sti.lua b/birb/modules/world/maps/sti.lua
index ca10745..7de6837 100644
--- a/birb/modules/world/maps/sti.lua
+++ b/birb/modules/world/maps/sti.lua
@@ -34,7 +34,7 @@ function StiMap:loadCollisions()
   for k, objectlayer in pairs(self.sti.layers) do
     if self.world:isCollisionIndexed(objectlayer.name) then
       local debugstring = "loading " .. #objectlayer.objects .. " objects in " .. objectlayer.name .. " collision layer"
-      core.debug:print("map/sti", debugstring)
+      core.debug:logDebug("map/sti", debugstring)
         for k, object in pairs(objectlayer.objects) do
           self:newCollision(objectlayer, object)
         end
@@ -47,7 +47,7 @@ function StiMap:loadActors()
   for k, objectlayer in pairs(self.sti.layers) do
     if self.world:isActorIndexed(objectlayer.name) then
       local debugstring = "loading " .. #objectlayer.objects .. " objects in " .. objectlayer.name .. " actor layer"
-      core.debug:print("map/sti", debugstring)
+      core.debug:logDebug("map/sti", debugstring)
         for k, object in pairs(objectlayer.objects) do
           if (object.properties.batchActor) then
             self:batchActor(objectlayer, object)
@@ -64,7 +64,7 @@ function StiMap:loadPlayers()
   for k, objectlayer in pairs(self.sti.layers) do
     if (objectlayer.name == "player") then
       local debugstring = "loading at most " .. #objectlayer.objects .. " actors in " .. objectlayer.name .. " actor layer"
-      core.debug:print("map/sti", debugstring)
+      core.debug:logDebug("map/sti", debugstring)
       local i = 1
         for k, object in pairs(objectlayer.objects) do
           self:newPlayer(object, i)
@@ -115,7 +115,7 @@ function StiMap:newCollision(objectlayer, object)
   local y = object.y
   if (fromTop) then
     local poschange = z .. ";" .. y .. " => " .. z-d .. ";" .. y+z
-    core.debug:print("map/sti", "create from top, set z and y: " .. poschange)
+    core.debug:logDebug("map/sti", "create from top, set z and y: " .. poschange)
     y = y + z
     z = z - d
   end
@@ -129,7 +129,7 @@ function StiMap:newPlayer(object, i)
 
   local y = object.y
   if (adaptPosition) then
-    core.debug:print("map/sti", "adapting position, set y: " .. y .. " => ", y+z)
+    core.debug:logDebug("map/sti", "adapting position, set y: " .. y .. " => ", y+z)
     y = y + z
   end
 
diff --git a/examples/main.lua b/examples/main.lua
index b0f6ba0..622cf65 100644
--- a/examples/main.lua
+++ b/examples/main.lua
@@ -26,7 +26,7 @@ Game      = require "game"
 scenes  = require "scenes"
 
 function love.load()
-  birb.startCore()
+  birb.startCore(3)
   game = Game()
   game:read(1)