Sonic Dash 2: Sonic Boom is an endless runner game developed by Hardlight Studio and published by Sega. It is a sequel to the original Sonic Dash game, with the characters and settings based on the Sonic Boom animated television series. The game was released in 2015 for iOS and Android devices.

In Sonic Dash 2: Sonic Boom, players control Sonic the Hedgehog and his friends, Tails, Knuckles, and Amy, as they run through a variety of levels, dodging obstacles, collecting rings, and defeating enemies. The game features updated graphics and gameplay mechanics compared to the original Sonic Dash, as well as new power-ups and characters.

The game's setting is based on the Sonic Boom universe, with levels featuring locations from the television series, including Seaside Hill, Hedgehog Village, and the ancient ruins of Ragna Rock. The levels are designed to be challenging, with a variety of obstacles such as pits, spikes, and enemy robots that players must avoid or defeat.

Sonic Dash 2: Sonic Boom also features a variety of power-ups that can be collected during gameplay. These include speed boosts, shield protection, and magnets that attract rings. Additionally, players can collect characters' special abilities, such as Tails' flight or Knuckles' ground smash, which can be used to defeat enemies and access hidden areas.

One of the standout features of Sonic Dash 2: Sonic Boom is the ability to play as multiple characters, each with their own unique abilities and playstyle. In addition to Sonic, Tails, Knuckles, and Amy, players can also unlock other characters such as Sticks the Badger and Shadow the Hedgehog.

The game also includes a variety of challenges and missions for players to complete, such as collecting a certain number of rings or defeating a certain number of enemies. These challenges offer rewards such as new characters or power-ups, adding an extra level of depth to the gameplay.

Sonic Dash 2: Sonic Boom is free to play, but it includes in-app purchases that allow players to purchase additional characters, power-ups, and other items. However, these purchases are not necessary to enjoy the game and progress through the levels.

In terms of controls, Sonic Dash 2: Sonic Boom is played by swiping left or right to move the character, up to jump, and down to slide. The game also includes tilt controls, which can be used to steer the character in mid-air or to collect rings. The controls are simple and intuitive, making the game accessible to players of all skill levels.

Overall, Sonic Dash 2: Sonic Boom offers a fun and engaging endless runner experience for fans of the Sonic the Hedgehog franchise. With its colorful graphics, challenging levels, and a variety of characters and power-ups, it's a game that is sure to keep players entertained for hours.