Not to be the hispter, but my fav. is a very niche game called "Het Yogo Yogo Spel", it's a promotional game for a drink in the Netherlands. for some reason i have such strong nostalgic feelings for it, i really loved playing it as a kid and even more as an adult because it reminds me of that time so much. and no, it's not an amazing platformer (not bad either) but man...
yeah, i basically have youtube on throughout the day so it's a good "investment" for me. but yeah, the deal is, i pay them, they don't show me ads (and sponsorblock does the rest) so this is quite wild.