A game where the moon helps at the darkest hour, the sun helps always but maybe not as much.
Has a deep message where the everything is good when it's light out because everything is bright and happy but when the sun goes away and it becomes night time only the moon can help the main protagnast at the darkest point.
Maybe have it to where monsters come out during the night and you are on an adventure exploring the landscape and killing monsters that come out during the night.
The setting is a post-apocalyptic futuristic world that you have to explore.
A 2D Side-Scroller adventure game with art being a major factor.