GameMode choice

How can I make a button on the menu before game, so the player can select if Player Controller Class in the VehicleAdvGameMode will be MyPlayerController or select if will be MyPlayerControllerHover

I have 2 types of vehicles, but both use the same GameMode, and I need to make this button to the player select wich mode of the game he wants to play.

You’re not supposed to have 2 different player controllers if you have more than 1 pawn. You put in your controllers what is common to all of them, and then what’s unique to them in the pawns themselves. At least that’s the intended use of those classes.

You can also program two or more behaviors in to single controller and switch between them or even do it in more blanding way