You can't. According to the internet encyclopedia, mixly can't develop Android games. Mixly is a graphical programming software based on Blockly, which mainly supports Arduino hardware programming and does not support Android game development. Mixly, the full name of MixlyArduino, is a graphical programming software developed by the team of Professor Fu Qian from Maker Education Laboratory of Education Department of Beijing Normal University. Mixly is developed based on Blockly and Java8, and can run stably on WinXP and Win7 operating systems.