I’ve cleared entries before with efibootmgr.

My favourite games from childhood were the Ultima series (3 onward).

deleted by creator

I’ve done this recently twice and it worked between 2 different distros on different hardware. I don’t remember if I had to link it again, but if I did, it worked and my history was intact.

Do a search for “One Pace”. A good feeling pace is about 2 manga chapters per anime episode but the anime creators reduced that to 1 chapter per episode when they started running low on material. One Pace edits the anime to 2 chapters per episode and has it follow the manga more closely.

A sample of a scene from an episode with both versions compared:

https://youtu.be/n1z6umwBs5I

If by ”backup” you mean “infrequently used”, be careful about using Tutanota for that purpose - it will delete free accounts after 6 months of inactivity.