Zoom in on part of what's displayed on-screen ?

[MathWizard]

I'm playing a 2D game called FTL, as in FasterThanLight drive, and I'm playing windowed, and watching a fire burn on my ship, inside a room with lvl3 doors, and level 2 oxygen, and just finding what happens to the fire with different levels of door's/oxygen.


But I want to zoom in over the windowed game, like with a magnifier, in-screen, and I don't mind if it's a little window that I can place on the side somewhere.


What program does such a thing in Linux mint cinnamon ? (these programmers and their unscientific names and labels should be dealt with)

[nfmax]

That sounds like a 'screen magnifier'. You may find it hiding somewhere under 'accessibility' as they are very useful for persons with partial sight.