AutoTiles Helper is a set of scripts providing functionalities to expand compressed tilesets into a set of 47 tiles, and get their respective index when placed into a room based on adjacent tiles. You just have to provide the tileset, and the scritps will automatically figure out which tile is appropriate for a particular spot.


  • Automatically get the correct tile images based on the adjacent tiles
  • Generate a complete tileset from a compressed one. No need to draw every single tile!
  • Fully documented and commented

If you are just interested in the tile expander functionality, download the sample project:



Documentation and install guide

Forum topic

My assets: FormLESS (UI framework), GMGL (autoupdater & launcher), GMSDB (database system), Jade UI (UI sprites)

End User Licence Agreement (EULA).

Changes in 2.0.0

  • All functions rewritten and optimized
  • Tile order changed to match GMS2 autotiling system
  • Updated sample project
  • Updated docs

Version 2.0.0. Published April 2, 2017

Created with GameMaker: Studio v1.4.1763

Age Rating: 4+

Average Rating

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Anonymous 08 April 2019


Evgeny K 05 January 2019


Josha S 05 October 2018


joo j 22 September 2018

Such a convenient tool

One minor nitpick though.. while now it fits 47 tileset just fine, the first part is blocked by a Black-and-white checker thing that apparently deletes the tile, and I have to move that blocked tile manually.

While it's still much better than nothing, could you fix that, or help me fix it myself?


Homunculus (Publisher) 24 September 2018

Hi! I'm not really sure I understand the problem, can you contact me using the contact form so we can discuss this by email?


Anonymous 19 September 2017


Marko R 25 March 2017


This is an all around fantastic tool!
Its ability to produce 47 tiles sets just by running it out of GMS 1.4 is worth its weight in gold...
As a matter of fact, I use it that way - do my development in GMS2 with 1.4 open to quickly prepare the sets.

However, there is a little snag... the tileset produced does not conform to the GMS2 47 autotile sequence. It is quite a lot of work to assign all the tiles to their corresponding slots, and I have to use the documentation while doing it. If the tileset file produced used the same sequence as the one in GMS2, this would be a 5+ product.

This review was left for a previous version of this asset.


Homunculus (Publisher) 24 April 2017

Hi Marko,

thanks for the feedback, as of version 2, the tile order matches the one used by GMS2. Moreover, you can also download the project as an exe file to be used as a tile expander tool.


Jonathan M 12 January 2017


Great product. Will use it in all my project that uses tiles.

This review was left for a previous version of this asset.


Fran L 17 August 2016

Fantastic tool !!!

Not only an autotile script, also a fantastic tool to easy make full tileset of 47 images from a basic tileset. These tools saves a lot of time and size of the final executable.
Works great !!!
Thanks for sharing.

This review was left for a previous version of this asset.

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