I recently started a game of Pirates! When I sat down to play today, the pirates were no longer the only ones spicing up their speech with arrs and ahoys. The merchants were doing it. The military were doing it. The nobles were doing it (awkwardly). The barmaids were doing it. Even the user interface was doing it.
I thought at first that it might have always been that way, and just escaped my notice, but that seemed unlikely. Next I thought I might have accidentally enabled a game option for it, but I didn't remember reconfiguring anything.
Then another possibility came to mind. It seemed like a long shot, but just in case, I looked up today's date. Sure enough, today is International Talk Like a Pirate day. This 20-year-old game apparently knows it, and switched every bit of its dialogue and writing into pirate speak to honour the occasion.
I love this.
You can still get that by just playing very small indie games. There's tons of small games out there being made by just a handful or even one person that have these kinds of little fun things scattered throughout them. They are harder to find by their nature but that culture is still very much alive in the indie space.