Being required to perform repetitive and tedious tasks to advance.
"While the "grind" comes from playing the game, earning coins can be quite tedious. The player typically earns 5% of their score in coins once they crash. However, the player can earn double the coins by watching advertisements."
"Upgrading your cards can only be achieved by paying or grinding levels for currency."
"It's kinda a sandbox game, but it does have a campaign you use to get statues in order to battle against AI in turn-based, rock-paper-scissors-like combat, but you get statues by completing challenges / solving puzzles, which pretty much gives the player something to do besides aimlessly wandering around & trying things. The statues *do* level up though"
"The game is split into 'leagues', and sometimes you may be stuck on a league, having to play it a few times before becoming the champion, but at the same time, winning every league wouldn't be that fun, as the game wouldn't have any real challenge. I think the skill curve is not too steep and it's justified for what it is."
"The whole point of the game is dragon care which ends up being fairly repetitive"
"I think that some of the levels are intentionally designed to be impossible to complete in the allotted amount of moves. This meant I'd play the same level over and over again trying to beat it without spending money, and I'd eventually give in and buy the in-game currency because I just wanted to move onto the next level."