How to export to multiple screen sizes?

Is there a simple, "Low effort", way to export a game to multiple screen sizes?.

You make your export able to support multiple sizes:

tutorial link

Typically, enabling 'letterbox fullscreen' mode in project properties is sufficient for many projects.

I?m using the standard of 800x480. The scale letterbox will fit the project to 1280x720 and/or lower screens, this I understand.

But I?m talking about RE-sizing the project to different resolutions. Because I figure that if I run an 1280x720 project in an 800X480 cellphone, using letterbox option, the game will execute and adjust, but I assume that it will run substantially slow.

---

I thought we had to save different Capx adjusting project resolution and layout resolution and moving and scaling every sprite on the project.

3division - no, you can support all resolutions with a single project.

I don't believe there is any significant performance impact to using letterbox fullscreen mode, and it should work on any size screen at all.