@Shaheryar @knightMash
Sorry I don’t know, I’ve never created a game in portrait mode, maybe someone else can help.
Filling the right gray area is easy by placing something at this point.
I think that only looks okay if it’s a platformer and you’ll run to the right.
I don’t know your game, the “center the game window” action could help.
And jup the fact is, many have problems with it and it’s frustrating. Maybe it should be revised, simplified, or clarified.
Here is e.g. an idea for predivined resolutions https://forum.gdevelop.io/t/preset-resolutions/25941