Hi! I don't think i know enough about Phaser or how the process of launching that would exactly look like, BUT i can give you info that might help answer that. The way it launches other apps / games / open files is by calling OS.execute(documentation) with a relative path and provided arguments. If you can figure out a way to launch it from console - this tool can launch it too! Check the gameboy-rom in the example project for a practical example! If you cant launch it in one command - you can try making a .bat you can point it to instead or use autoit(link, exports to tiny 2kb exes among other things!) for anything more complex!