The size of the window

[Loquime]

Hi ! when i choose the definition for my screen, the result was that the window where i can play Ragnarock was very small !

How can I change the size of the window pls ? 

Edited August 28, 2018 by Loquime

[Moon]

4 hours ago, Loquime said:

Hi ! when i choose the definition for my screen, the result was that the window where i can play Ragnarock was very small !

How can I change the size of the window pls ? 

Hi,

try this:

 

or