I too like reducing color, the gameboy is definitately a good palette to go by, gives that instant nostaligic feel.  Don't get me wrong, I like the readability of this, just some overall small niggles here and there. (as stated in my previous comment)

Thanks for your comment. The coloring is weird, because it originally had a bigger palette. I decided to switch to gameboy palette because of overall minimalistic look and low resolution.

I prefer the thumbnail myself :).  This looks very experimental to me, there's varying degrees of detail between each character, and not enough perceived distance for the knight/guard above to have more shading, if anything they should have  less shading.  however goatman is good.  Keep at it!