In-game timers that make you arbitrarily wait for something.
"Each mission / run costs 5 energy (you have a max of 20 energy, that you can refill by paying with gems, costing time of grinding or real money)"
"You get items to merge from boxes to that cost you energy that will run out eventually. You have to wait, pay, or watch adds to get more energy and it’s the same things for the box’s in which you get your items to merge from."
"many things run on timers. sending pikmin on expeditions, collecting accessories when you've leveled a pikmin enough, and battling mushrooms (which used to take anywhere from 30 seconds to a few hours but was recently updated to take several hours to multiple days to complete)"
"void energy and there is no way to get repetetively better gear as a newer player because events are harder without legendary gear/perks so you have to wait for free stuff"
"Certain feature is time locked, and progress at large requires waiting. Not sure if it qualifies"
"The game is to design a room, and then have people judge it by voting. But to play one level, first you need a currency that you can only win by voting. You need to vote between 25 and 100 times just to be able to play one level, depending on the difficulty."