The place is very tropical and takes place on hills and cliffs covered with green grass and beautiful beaches on the coast. It appears to be a tribute to Green Hill from the original Sonic the Hedgehog as it has checkered walls and palm trees. In these hills, there are also ruined and flooded temples.
Mario & Sonic at the Olympic Winter GamesA snow-covered version of Seaside Hill appears as the venue for the Dream Alpine event in Mario & Sonic at the Olympic Winter Games. At the opening of this Event, just before showing the characters, the camera rotates and gives players a view of the starting gate. Giant fans can be seen blowing artificial snow on stage, so it's safe to assume it doesn't snow here often.
Sonic & Sega All-Stars Racing
Seaside Hill appears as a beginner track in Sonic & Sega All-Stars Racing and is the only stage available in the demo. It is very simplistic, however, it carries many elements of this stage, such as ramps and cliffs. It's also very different, due to the fact that this stage is somehow combined with Ocean Palace and has some elements of the Green Hill Zone, which includes sunflowers and totems, and the Labyrinth Zone, which includes traps and carved stone blocks (very similar to those in the previously mentioned fourth zone of Sonic the Hedgehog). A remixed version of the Sonic Heroes stage music plays. The Chao are spectators on this track.
Sonic & All-Stars Racing Transformed
Seaside Hill (mixed with Ocean Palace) is the setting for the Ocean View track in Sonic & All-Stars Racing Transformed. There is a segment where a robotic octopus will try to stop the player while he/she is in the water.
Team Sonic Racing
In Team Sonic Racing, Seaside Hill appears as one of the main locations in the game. It has three racetracks, each of which explores different aspects of the location.
Team Sonic reunited with Team Rose at Seaside Hill after receiving an invitation from the mysterious Dodon Pa. After the teams encountered Dodon Pa at Seaside Hill, he took them with him on his spaceship to Planet Wisp to compete at his Grand Prix. After that, several teams would come to Seaside Hill on many occasions as part of the Grand Prix and have multiple races there. At the end of the game's events, everyone also gathered here after they destroyed Final Fortress and saved Dodon Pa.
- Seaside Hill is the most recurring location in the series after Green Hill.