I don't see any actual playable games downloadable from www.europeana.eu at the moment, which is the website for the EU's collection of digital cultural heritage. That does come with the caveat that I've never used it much and may well just be missing something, though. However, there is a fair bit of stuff about videogames, even including images of physical hardware kept in various collections across the EU. I can also definitely see an argument for games being part of cultural heritage, particularly as the medium develops and becomes a bigger part of our culture. I think it'd be pretty fair to count Tetris as Russian cultural heritage, for example, not only because of its incredible influence but also how much it brought a Russian folk tune to global awareness (even if, ironically enough, it was an American version that did this second part).
Noita: building wands with horrendous recoil. I know it's going to get me killed when I launch myself in to something dangerous, but it's just funny to be able to fly by the power of destroying everything in a given direction
DRG has a whole list of things that just feel good:
Fucking obliterating one grunt with your biggest gun or explosive as you board the drop pod
Going back to rescue your teammate that didn't make it to the drop pod even though it technically barely matters as long as one person makes it back alive
When building liquid morkite pipes that run parallel for a while, lining the support points up
Using a bulk detonator to kill a dreadnought
Mining a crassus detonator gold sphere by drilling all of the surrounding terrain away so that the entire sphere pops at once and collapses in to a neat pile