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Old August 27th, 2009 (09:49 AM).
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IIMarckus IIMarckus is offline
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Quote originally posted by sky_queen3:
Is there a tool like unLZ.gba for G/S/C or even R/B/Y? If not, how do I change Pokemon sprites in those games?
RBY uses one form of compression that has no compressor available, although images can be decompressed with the program rbgfx.c. Pokémon Brown has modified images, because the authors rewrote some assembly code to avoid needing compressed images at all—therefore, that hack uses uncompressed images.

GSC uses another form of compression. Images can be compressed into the ROM with the program AGIXP, although whether or not the program works on a given computer seems to be hit‐or‐miss.
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If you want to hack Pokémon RBY or GSC, read, read, and read some more. This has tons of valuable information.

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