The reason there's so much Yoshi's Island stuff in the Mario Kart line is because the Japanese version of the park has another Yoshi-themed ride, Yoshi's Adventure, but there wasn't enough room in the Hollywood park to add it so they added a bunch of the scenery to make up for it:
The Battlefield Golf thing Dan was talking about was a course in Rory Mcilroy PGA Tour 2015, it was a course set on the Battlefield 4 map Paracel Storm:
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