Sonic Heroes HD is an arcade game in the Sonic universe, with an open world and the ability to enter stores and buildings. Levels are divided into main and secondary quests, for a successfully completed task, the assessment of the completed stage increases. In addition to missions, the increase in the assessment is affected by: collecting rings and fighting with opponents. For lost life points and missed bonuses - the assessment will decrease.In the game Sonic: Heroes, there are 4 teams of 3 characters, who are responsible for a special ability - strength, speed or flight. Game levels are made with an emphasis on the player using all the heroes individually or together. Obstacles on the tracks are passed in several ways, depending on the combination of abilities. These can be both power techniques and high-speed ones with a transition to air.Each team has its own plot:
- Sonic - after receiving a letter from Dr. Eggman, Sonic and his friends learn that he wants to take over the world and decide to prevent him from doing this.
- Shadow - to achieve his personal goals, Shadow and his partners go in search of the doctor.
- Espio - along with other detectives, Espio works for the doctor, who wants to get rid of them by assigning dangerous tasks.
- Amy - the girl's Froggy and Chocol have disappeared, in which she suspects Eggman and tries to find him, armed with the support of her other friends.