Being required to perform repetitive and tedious tasks to advance.
"Continously gather gems and gold to upgrade your dungeon, rank, defenses, skills, etc"
"You may have to repeated gather certain items to fulfill difficult orders or gather money to build certain buildings"
"Breeding monsters is grindy due to the random chance of getting a specific monster. For maximum strength you're required to acquire multiple monsters of the same kind to destroy the duplicates and turn them into cells to upgrade your monster's strength."
"Farming bosses for good unique items. Takes a long time to get to max level, well after game is completed"
"unless you pay, everything in the game is grindy af, you have to play 100 matches a day to have a good progress, which no one does... at least i hope no one does."
"example - Farmers bay. To open up sections of the map needed to access new building types and resources youu need to complete LOTS of deals in one of two buildings. To complete deals you need to obtain certain items from the Market by using resources abtained from other areas. Types of items dropped by the market are random! The number of items needed for the sections number in the 1000s but only 10's are available with each deal.."