Could be obscure hobby related or a useful underrated site.
That’s definitely https://noclip.website/
I love retro video games (and current games). And some badass implemented the rendering of several games and consoles in JavaScript just for fun, so that you can explore levels from many games right in your browser.
Note that I did say explore, not play. This website let’s you fly the camera through the level like with a “no clip cheat” (hence the site name).
It somewhat works on mobile devices in landscape mode (and maybe also “show desktop page”), but is best viewed and controlled on a PC.
People talking about Windows 98 and Pentium 3 processors all day long, feels just like home.
https://rebecca.blackfriday is also pretty nice.
It even translates yes or no in the language of the country you live in
