[INDEV] Pokemon Card GB Expansion | New Sprites 06/22/12 - Reconstructing OP

[Domobot]

Awesome stuff in here. One thing I think would be worth mentioning, though, is that every 8x8 tile can only have 4 different colors. For instance...

Magnemite

The highlighted areas have five colors. I also took a look at your Pupitar, and most of the tiles broke this rule. This wouldn't be an issue if this was going into a new engine or something, but there's no way this would work on a Gameboy, emulated or otherwise.

Spoiler

And if you want to get even more technical, I think every card can only have 2 4-color palettes, which means tiles can't use colors from both palettes unless it's part of the palette already... I think.

Anyway, I worked on something similar a far while back- this neat-o Shiny Registeel.
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Conveniently, this breaks every rule defined above, and then some. I even scanned and traced over the actual card which probably isn't too kosher. I might dick around with it later.