The urge to collect all the items, achievements or secrets in a game.
"rewards for collecting sets and your forced to collect sets during the planes for stability however you get them pretty easily through playing the game"
"When you complete an outfit, you obtain rewards. There are about a hundred of outfits to compose in total, and most of them are only obtainable with the highest currency of the game, that yout can obtain by paying real money."
"For each idol card you can collect "fans" (using the card during song or work time), when you reach a certain amount you gain awards/items/outfits for that idol. Each card has a max amount of fans you can collect so it sneaks in the thought of getting more cards for that idol you reaaaly want to level fans up with."
"A bit. Oh, hello, quest cape, max cape, master quest cape, master max cape, completionist cape, trimmed completionist cape..."
"Clearing achievements also gives a reward (coin,gem,item,weapon skin,and also Play Games XP) further encouraging players to play more to unlock all of them"
"Clearing achievements also unlocks items, characters, and upgrades, further encouraging players to play more to unlock all of them."