I used lossy compression of the orginal png files to webp.
However, now that there is more support for .avif, I can use that format in the future for games to bring down the file size even more. Which matters for the android build due to the APK limit of 2GBs for some devices.
I only recently started using .avif, which is only used on my nearly finished project "Calvin and Hobbes-chan"
The project folder has lossless quality webp images. Which you can use to play the game or create builds from.
