Open-world games nearly always have choices—where to go, what to do, what side of the law to fall on. In one of Bethesda’s sprawling ones, like Fallout 4 (2015), you practically have the freedom to do whatever you want, by which you quickly learn means that you can kill whoever you want. In the highly-scripted, morality-questioning Red Dead Redemption (2010), while you can ride horseback across dusty horizons, some of its missions hurriedly devolve from this into frustrating plights of killing decent people. This is the open-world taint. Hence, game maker Brett Johnson, of the one-man Seattle-based game development studio Seamount Games, seeks to…