How can I change the size of unity's Game screen?

Unity Engine
1

I want to change this attached picture’s size as a specific size, something like 700 * 600 or 900 * 754.

Can I do this? How?

452463--15776--$game.PNG

2

Turn the stats on (so you can see the screen size) and drag the window borders until it’s the size you want.

–Eric

3

Thanks. So I now know [Free Aspect] exist for that purpose.