Creating Your First Tileset

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The primary tutorial — a step-by-step walkthrough for new users:

  • Prerequisites: working pokeemerald/expansion project, Porytiles installed, Porymap installed

  • Preparing RGBA layer PNGs (bottom, middle, top): dimensions, transparency rules, extrinsic transparency color

  • Writing attributes.csv: format, columns, MB_NORMAL

  • Running porytiles create-tileset gTileset_MyTileset

  • What happens: directory creation, artifact generation

  • Running porytiles compile-tileset gTileset_MyTileset and viewing in Porymap

  • Common first-time errors and how to fix them

Cross-references: How the GBA + Gen III Decomp Tileset System Works for “what is a metatile”, Metatile Attributes Reference for attributes, Configuration Reference for customization