They don't want to hire an art developer. They make enough money to keep the lights on between donations and the Patreon, but it's not enough to subsist the inc

They don't want to hire an art developer. They make enough money to keep the lights on between donations and the Patreon, but it's not enough to subsist the income of another. Toady's reason for the simple graphics is that it lets him focus on core gameplay, which is what he enjoys.