Here’s some files you may find useful if you want to dig deeper in Survivalcraft.
Use it as a template to create your own block textures. You can download the customized blocks texture from within the game. Please note that adding transparency to slots that do not have transparency in the default blocks texture will cause visual glitches. Also, partial transparency is not supported, alpha must be either 0 or 255, or you will get more visual glitches. The width and height of the texture must be a power of 2 (128, 256, 512 etc). Maximum supported size is 1024×1024.
Use it as a template to create your own skins. The width and height of the texture must be a power of 2 (32, 64, 128 etc). Maximum supported size is 256×256.
Useful for wikis etc. Rename extension to .zip and unpack.
Useful if you want to analyze, visualize or edit the world data outside of the game. For example it would be easy to create a tool that produces a patch of flat terrain so that you don’t have to flatten it yourself in creative mode. A tool that visualizes whole terrain in isometric projection using block icons is also possible. If you create something useful using this data, I’m happy to publish it on the website where it will get a lot of exposure – get coding :-)