Folks, thanks to my son, I bring you Flappy Economist. In it you control the money supply but you have to balance between the economy going between disastrous unemployment or rampant inflation. Of course, if you fail then the economy dies.
You’ll also notice that the economy has a Keynesian bias in that you have to keep active with enough money to stop the economy falling into depression. I am sure that others can work on an Austrian version.