Usually games have a menu button that can control skill, speech, etc.
But if a game has no such menu, is there any way to lower or raise the volume?
If you are not going to use gui controls like buttons and sliders you can use keyboard keys..
Use them how? If there's no menu for volume control, which keys can I use to lower the volume?
Check out
on_key_press and IsKeyPressed
Search here and read the manual...
bugmenot, do you mean that it is someone elses game that you are playing?
On Windows you can open audio mixer settings (access from volume slider) and control individual volume per application.
Someone else's game, yes.
That's indeed what I did. Well, more specifically I used a program that can launch any program with a pre-defined individual volume.
But it's easier if the game just does it internally.