Can i write the Xbox 360 Controller is recommended in my installer for my game? I know the words Xbox 360 are copyrighted and I want to avoid all possible legal trouble.
You may want to say something like game controllers (i.e. Xbox 360 controller). That way you are using it as an example.
Yeah, it's better to just say "Gamepad" or something. A lot of people prefer Logitech controllers, others the 360 etc.
There's generally no significant difference between them anyway, not enough to specifically target the 360 pad.
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Avoid using copyrighted terms, use general terms as mentioned: Gamepad, Controller.
Not things like; MadCatz Controller etc.
We say we support the XBox 360 controller for Construct 2's Gamepad object, and as far as I'm aware that's fine for us, so I think it's fine for you too.