UniTMX: A TMX importer for Unity3d

UniTMX is a TMX file importer to load files from tiled map editor into Unity originally developed for Twisted Potions: Double Trouble.

It does not support all the features from tiled but it may work fine for most of cases.


  • Imports TMX Files into a mesh
  • Loads (optionally) mesh collisions into the same gameobject, or a different one.


  • Only works with orthogonal sprites
  • You can only use one tile sheet per tmx file.


  • Put this repo into your assets folder.


In Tiled Map editor:


  • Load your tilemap
  • Paint some tiles in different layers

Avoid naming your tilemap or layer Collision or collision_ as it will cause problems with the collision layers


  • Create a new Tileset named Collisions you can Collision.png from example assets
  • Right click on each of the tiles you want to configure for collision and click tile properties.
  • Set a property named col with one of the collision values like in this image
    • Collision Values: top,bottom,left,right. Only use one of them per tile
  • Create a layer called collision_1 (or collision_N) and paint your collision tiles there.


  • Save. Remember to set the tmx tile layer data format as CSV like in this image
  • Rename the tmx file as xml.
  • To make this easier, you can use Tiled's "Edit Commands..." feature to add this command "cp %mapfile %mapfile.xml" Just make sure to check the "Save map before executing" check box. Now each time you press the command button, it will save your map and make a copy with .xml at the end.


  • Setup your 2d Scene for 2d sprites (orthographic camera etc), if you want take a look on how is the scene built on Twisted potions: Double trouble.
  • Create and empty GameObject.
  • Now click on Component->Scripts->TileMap
  • On the GameObject inspector you'll find a new set of options that look like this
  • Select the tilemap XML that you created earlier on tiled. And hit Import tiles or Generate colliders according to your needs.
  • Finally, remember to add a material with the tilemap texture to that GameObject, so it displays correctly it's contents

There are also some example assets that you can check if you have any doubts

If you want to extend the collision formats check the Code/Tileset.cs instructions

In case you want to run the importer from inside the game it's also possible, check how the Editor/TileMapEditor.cs is works, but be aware that the script is not optimized so you may have troubles with the GC