Farming on a grid-like system has been a common gameplay mechanic for this jam and our own game, Calorie Crunch, used a grid system itself, but due to time limitations we couldn't get a working tilemap in time for the jam and had to resort to something else. To speed up the process next time, and for others, I've created some tooling to make it easier.

The autotile templates provided with the official Godot documentation on Autotiles aren't easy to use because the guide lines have been baked into each tile, requiring lots of editing using a graphics program (such as gimp). They're usually not at the dimensions required, either. Godot Autotile Texture Templater (GATT) solves this problem by generating templates for use in Autotiles.

Set your block size and desired base colours and 2 files will be generated for use in Photoshop or Gimp as a base for your own tile art. Or use it right away in a prototype right in Godot.

Download and try the tool from itch.io. The open source code repository is linked from the itch.io page as well.