Sora and Shiro are a pair of gamers that collectively go by the name Blank, and Blank never loses. Because of this they have become quite bored and are slightly interested when they are challenged to a game of chess. On winning the game they get asked it they want to go to a world where games decide everything. This starts what is one of my favourite unfinished anime stories as it takes us into a fantasy world that is really compelling though it isn't without its problems. First published June 2016.
It is worth noting that realism is not what this anime was going for. All of the characters are complete and over-the-top parodies of human beings (even though the vast majority aren't human). And while this isn't necessarily a bad thing, it does make it hard to feel sympathy, empathy, or anything else for the characters.