miniblog.

I'm always hesitant when I see digital services funded by a single one-off payment. Running a service requires ongoing funding. You sometimes see this with games that have a multiplayer component. People buy the game, but the multiplayer servers won't last forever.

It's odd that games often show the hours played, but I've not seen this in other apps. "You've spent 20 hours talking to this person." Would this be a usage deterrent? If so, why do many games offer it by default?

One interesting aspect of collecting coins in a platformer like mario: it makes the level stateful. You can see if you've been somewhere before based on whether there are coins present.