Which brand collaboration holds the Guinness World Record for the largest product launch event by attendance?

The world of brand collaborations has seen some extraordinary partnerships that broke records and made history. These strategic alliances between companies have created unique products, generated massive buzz, and sometimes set official world records. Test your knowledge about these remarkable cross-brand initiatives that pushed boundaries and achieved recognition in the Guinness World Records.

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Apple & Nike's 2016 Apple Watch Nike+ launch in Beijing (27,080 attendees)
OnePlus & Marvel's 'Avengers: Infinity War' phone launch in India (2018) with 31,213 attendees
Samsung & Adidas' 'Galaxy Fit' launch event in Seoul (2019) with 29,544 attendees
Microsoft & Porsche's 'Design Your Dream' surface laptop launch in Berlin (2017) with 30,088 attendees