I paid like $70 for FF 7 remake pack (two titles) on Steam. Even then I felt like they could optimize the graphics algorithm a tiny bit (I don’t want them to swap the texture frequently to a poorer resolution one just because the GPUs from 7 years ago (on PlayStation?) had less VRAM.

Never was. Nintendo 64 was developed at SGI and sold to Nintendo after turned down by others.

How OS

Pretty much Qt. You can learn how different OSes have different way.

However, modern GUI programming is happening on the web and mobile phones. React is popular, but it’s too high level and their XML-based approach is horrifically designed. Swift UI is nice, but it’s Apple-only. Flutter is a good middle ground, but its Desktop capability is limited. You’re going to shoot on your own foot several times.

Macs, or iTunes on Windows. There are two modes of a backup: actual one or backup in name only (like the names of the apps, I wish the latter fucks off).