Seriously... I understand perfectly the problems involved by pixel-art, even 16-bits-like ones.
But have you REALLY tried your own game on a modern monitor? In 1920x1080, which is currently a NORMAL resolution, it's way, way too small even on a 27" monitor!
Please at least offer the ability to double the game window, even if not upscaled/antialiased but simply with doubled pixels!
Game SEEMS interesting... But I simply cannot play with it. It's like trying to play a smartphone game while holding the device at arm's length!