Thanks for the feedback! It is definitely a fairly small pack, I wanted to do a pixel art asset pack but I also was participating in a jam that ended on Friday so I had less time than I had hoped to put into the art. The .png format does work for GameBoy if you build the game in the GB Studio engine, in fact the sample image .gif I included is from an in-engine scene being emulated for GameBoy. I'm not sure what you meant about the license comment but it is CC0, I figured I didn't need to include a copy of the license in the pack but I did include a .txt mentioning what the license was. First time making a pack so definitely a bit learning as I go on that one. I've used a lot of CC0 assets for projects in the pack so I wanted to make sure my pack was available under the same terms.
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About license I meant that you formatted everything in the best possible manner! I usually see something that is under free license but isn't clearly stated or when stated free licenses but at the same time it has a vibe of proprietary license. In your case everything is very clear and in the best form so it is very rare to see something like this...
I meant not png in general I meant exactly indexed mode
Thanks for clarifying! I'm glad I did it right on the licensing side then. I've never done it before so I was worried I would have something wrong on my end.
That makes a lot of sense with the indexed mode. I'm not sure if it would work on other GameBoy engines but it does work specifically in GB Studio which can build GB-compatible ROMs. I made the sprites the same way I did for my GB game last year and I did run that game on both an original GameBoy and a GameBoy Advance. So hopefully these sprites should also work. I didn't compile the sample scene into a ROM to test it but it was working in-engine.