While playing the game, there is no equivalent of the Start Button on the PC. At least not that I can find. I cannot leave a game because of this. Most games have this feature, so that if your team quits on you there is an option to leave without ALT-F4. Or if you’re having a graphical issue, such as low frame-rate, you can adjust it mid-game. During AI solo matches you could leave. The biggest problem is during the campaign I cannot quit a mission that I find I dont want to play anymore