diff --git a/config.lua b/config.lua
index c582db6..67698c8 100644
--- a/config.lua
+++ b/config.lua
@@ -2,21 +2,21 @@ require 'tablefuncs'
 
 -- Global config table
 ---@class Config
----@field pointRadius number Radius of each grid point
----@field linePointRadius number Radius of line start/end point
+---@field pointRadius number Radius of each grid point, relative to cellSize
+---@field linePointRadius number Radius of line start/end points, relative to cellSize
 ---@field cellSize number Size of each grid cell
 ---@field lineStyle string love2d line style setting
 ---@field lineWidth number love2d line width setting
 ---@field dragSensivity number drag sensivity, px
 Config = {
-    pointRadius = 7,
+    pointRadius = 0.3,
 
-    linePointRadius = 10,
+    linePointRadius = 0.4,
 
     cellSize = 30,
 
     lineStyle = "smooth",
-    lineWidth = 5,
+    lineWidth = 0.1,
 
     dragSensivity = 5
 }
diff --git a/grid.lua b/grid.lua
index 5faeab4..d6ca755 100644
--- a/grid.lua
+++ b/grid.lua
@@ -40,7 +40,7 @@ function Grid:draw()
 
         for y = 1, self.size.y do
             local px, py = x * Config.cellSize, y * Config.cellSize
-            love.graphics.circle( "fill", px - Config.cellSize / 2, py - Config.cellSize / 2, Config.pointRadius)
+            love.graphics.circle( "fill", px - Config.cellSize / 2, py - Config.cellSize / 2, Config.cellSize * Config.pointRadius)
         end
     end
     -- Draw lines
diff --git a/levelhandler.lua b/levelhandler.lua
index e5941e7..ed7b874 100644
--- a/levelhandler.lua
+++ b/levelhandler.lua
@@ -6,7 +6,7 @@ require 'makegrid'
 ---@field current integer
 LevelHandler = {
     levels = {
-        'test2', 'test'
+        'test3', 'test2', 'test'
     },
     current = 1,
 }
diff --git a/levels/test3.lua b/levels/test3.lua
new file mode 100644
index 0000000..e256e3e
--- /dev/null
+++ b/levels/test3.lua
@@ -0,0 +1,9 @@
+return {
+    width = 6,
+    height = 6,
+    lines = {
+        { 5, 4, 2, 2, "green" },
+        { 2, 5, 4, 1, "red" },
+        { 2, 4, 5, 1, "blue" }
+    }
+}
diff --git a/line.lua b/line.lua
index 4208a66..08d8703 100644
--- a/line.lua
+++ b/line.lua
@@ -51,9 +51,9 @@ function Line:draw()
     love.graphics.setColor( self.color )
     -- Draw start and end points (should look like rings)
     local sx, sy = self.startpoint:globalCoords()
-    love.graphics.circle( "fill", sx, sy, Config.linePointRadius )
+    love.graphics.circle( "fill", sx, sy, Config.cellSize * Config.linePointRadius )
     local ex, ey = self.endpoint:globalCoords()
-    love.graphics.circle( "fill", ex, ey, Config.linePointRadius )
+    love.graphics.circle( "fill", ex, ey, Config.cellSize * Config.linePointRadius )
     if #self.points <= 1 then
         love.graphics.setColor( Color.white )
         return
diff --git a/main.lua b/main.lua
index 404a262..7d4d338 100644
--- a/main.lua
+++ b/main.lua
@@ -5,11 +5,19 @@ require 'mouse'
 require 'levelhandler'
 Input = require 'input'
 
-function love.load()
-    love.graphics.setLineStyle( Config.lineStyle )
-    love.graphics.setLineWidth( Config.lineWidth )
+local function updateCellSize()
+    local width, height = love.graphics.getDimensions()
+    local gridX, gridY = GameGrid.size:coords();
+    local isWidthBased = (width / height) / (gridX / gridY)
+    Config.cellSize = math.floor(isWidthBased and height / gridY or width / gridX)
+    love.graphics.setLineWidth( Config.cellSize * Config.lineWidth )
+end
 
+function love.load()
     GameGrid = LevelHandler:first()
+    updateCellSize()
+
+    love.graphics.setLineStyle( Config.lineStyle )
 end
 
 function love.update( dt )
@@ -23,6 +31,7 @@ function love.update( dt )
     if Input:actionReleased( 'nextlevel' ) then
         if GameGrid:isCompleted() then
             GameGrid = LevelHandler:next()
+            updateCellSize()
         end
     end
 end