Sega Heroes

SEGA Heroes, originally known as Sega Legends, was a mobile crossover game that debuted on September 14, 2018. It's servers shut down on May 21, 2020 as a result of the developer, Demiurge Studios, going independant from SEGA.

Plot
Dremagen, styling herself as the "Master of a Thousand Dimensions", uses her power to take over the universes and timelines across time and space itself. Dremagen is able to clone any existing being at will, which she uses to her advantage by cloning heroes and villains she deems worthy to be part of her ultimate army. Amy Rose finds Ax Battler and asks for his help, though he refuses at first due to feeling too weak to take on Dremagen. Amy is able to convince Ax and the two decide to find Dremagen and defeat her before she takes over the whole universe.

Along the way, Amy and Ax recruit several others to their side, such as AiAi, Blaze Fielding, Ageha, Big the Cat, Wren, Death Adder, Hibana, Cream the Rabbit, Beat and Sonic the Hedgehog. The heroes also discover that Doctor Eggman and his robots have chosen to ally with Dremagen, assisting in her universal conquest. The heroes eventually confront and defeat Dremagen, vanquishing her as she swears vengeance. When the world is not restored to normal, the heroes decide to remain allied and prepare for Dremagen's inevitable return.

Gameplay
SEGA Heroes was a match 3 game, where the player had to match three or more tiles or shapes of the same color to score points and defeat enemies on the field. There were five different colored tiles, and four of them that could control a character's actions and abilities. The player had to select four characters of different colors (blue, green, red, and yellow) in order to battle enemies in an event. Depending on the color of the character, the tiles that were matched determined if a character attacked an opponent. If the player matched three or more tiles of the same color together, it resulted in the hero of that color gaining energy and attacking an enemy of choice. The tiles came in four separate colors (for each color-type); red, green, yellow, and blue, as well as purple for boost. Matching purple tiles together increased the multiplier, resulting in the selected heroes becoming stronger. Matching four tiles together created a star tile, while matching six tiles together created another type of Star tile that exploded a piece of the board and activated a different ability. The MAX ability triggered a character's special move.

Playable Heroes
The game featured over 50 playable characters, all of which were categorized by color. A team had to have included a character from each color; a red, green, blue, and yellow hero. Characters were also organized by rarity; common, rare, epic, legendary, and captain. Characters featured in the game originated from various Sega game franchises, such as Altered Beast, ChuChu Rocket!,Crazy Taxi, Golden Axe, Jet Set Radio, Phantasy Star, Shenmue, Shinobi, Sonic the Hedgehog, Streets of Rage, Super Monkey Ball, The House of the Dead, Valkyria Chronicles, Virtua Fighter and Yakuza.