Which psychological principle is primarily leveraged in limited-time seasonal events and battle passes that has proven to significantly increase player spending in free-to-play games?

In the competitive world of gaming, monetization strategies are carefully crafted using principles of consumer psychology. From battle passes to loot boxes, gaming companies employ various techniques to maximize player spending while maintaining engagement. This poll tests your knowledge about one of the most effective psychological principles used in modern game monetization that drives significant revenue across the industry.

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Loss aversion (the fear of missing out on limited-time rewards)
Operant conditioning (randomized reward schedules)
Social proof (seeing other players with premium items)
Endowed progress effect (giving players a head start)