HD Texture Pack
From The Blockheads Wiki
HD textures are an in-app-purchase introduced in update 1.4. They change the appearance of all blocks, crafting surfaces, Blockheads, and items to new, hand-painted, high-quality, versions. Like Double-Time, these effects apply in all worlds, including online servers.
The feature can be purchased and restored in the Options menu of the Pause menu. It can be restored onto multiple devices if they use the same iTunes ID.
