I created a game where you have to guess the location of a city on a world map.
I created it to play something during covid with my friends in video calls. Now it is still online, costs about 4€/m in hosting and is played by some people around the world. I would love to add some features (other player icon) with micro payments but I haven't found something which allows transactions with ~1cent. And I don't want to make it more expensive.