Bloons TD 6, offline games.

Gotta throw vampire survivors in there too even though that’s a port of a pc game. That game is just perfect for mobile.

I presume they’re talking about an element with something like this: position: absolute; left: -50px; width: 0px; height 0px;

Very commonly used for elements like skip to content links that are hidden off screen and shown on screen once they receive focus.