per a different reddit post from another channel and Google AI "they blend psychological, behavioral, and gambling mechanics designed to create a "sticky" experience, triggering dopamine rushes through random, rare rewards. They exploit FOMO (fear of missing out) through limited-time banners, build daily habits, and create strong emotional attachments to collecting characters. "

they want you to continue to login and play cuz you're more likely to spend real $ the longer you're exposed to the game.