All The Tropes Wiki Project, Part XXIII

[Umbire]

Also, asking here since it's a bit more likely to be seen:

You Know That Trope Where games have limited-time-frame events that aren't necessarily tied to specific holidays, but rather just particular days of the week, say?

I FEEL like we have something for that already, maybe as a supertrope to Holiday Mode, but I can't think of what it would be named...