CBS's long-running reality show 'Big Brother' has kicked off its 28th season with impressive ratings, according to recent Nielsen data. The first three episodes, which aired during the premiere week starting July 9, averaged 5 million viewers. That figure represents a 14% increase compared to the same period last year, indicating strong audience interest in the new season. Additionally, the spinoff series 'Big Brother: Unlocked' achieved its highest-ever viewership for a single episode, though specific numbers for that episode were not disclosed. 'Big Brother' is known for its format where contestants live together in a house under constant surveillance, competing in challenges and voting each other out. The show has been a staple of CBS's summer lineup for years. The ratings boost this season suggests that viewers are responding positively to the new cast and twists. The spinoff 'Unlocked' offers behind-the-scenes content and exclusive interviews, further engaging fans. CBS has not yet commented on the ratings, but the network typically uses early performance data to guide marketing and scheduling decisions. The season continues to air multiple times per week, with episodes typically drawing a dedicated audience. The increase in viewership could also be attributed to changing viewing habits, as more people watch live or catch up on streaming platforms. Overall, 'Big Brother' remains a solid performer for CBS as it enters the second half of the summer.