The screen is too small

I have problems recently about screen being too small.

This is a screen shot of a game. It is obvious to see that adobe does not fit the size of the game.

Moreover, the player does not fit the size of videos online too. Since the bottom of the screen (Volume, pause and the icons on the bottom) is too small. I have never encounter those problems before.

Could any one help me solve the problems? I would be very appreciated!