Level builders/editors
They're a lot harder to make with modern / 3D games.
But they also seem to boost a game's long-term audience by a lot, so it's weird they're not more common.
...I should make something that needs a level editor instead of always doing procedural stuff.
If you like cheesy live-acted cutscenes, I recommend Roundabout. Or at least watching its trailer. Or if you don't have time to actually play games, there was an SGDQ run where they did a speedrun but left the cutscenes on, but I think they end up skipping some due to tricks.