Is there a way of pausing the game automatically whenever the player turns off the phone or when they press the home button?

I'm creating my first game, using only my phone. It's simple yet kinda fun. :awesome: I plan that this will be only a game mode; the full game is going to be something like a survival roguelike, i'll add bosses and powers for you to choose each horde, and of course there will be more weapons and ene...

Is there any way to detect collision on transparent images with any kind of shape?

is there any app/site/library or any other way to make a tilemap in a simpler way on mobile? Or a way to make maps made in NotTiled work?

I made a game to test what I learned, with a blue tank that is the player, it has a cannon and shoots when you press "1", and a red tank that follows you. The problem is that the bullet that the player shoots does not appear. I checked the entire code and didn't find what was wrong. I'll l...