Forza Horizon 6's Series 4 "Horizon Mascot Party" playlist includes a weekly collectibles challenge called "Homerun," which tasks players with running over 15 Shimanoyama Heat mascots using their car. These are new, baseball-themed mascots distinct from the region's usual curry-themed mascot, and finding them can be tricky without guidance, prompting a location guide for players working through the seasonal challenge.

The mascots are concentrated in and around the Horizon Stadium in Shimanoyama, on the western side of the region near the coast, with one typically positioned at each stadium entrance. A handful of additional mascots can be found at three specific spots just outside the stadium. Players should be careful to hit the actual mascot rather than just leftover debris, such as the white sphere, if another racer has already struck one, as this won't count towards progress, which can be tracked via the Festival Playlist menu.