It allows you to play Sonic Mania Plus on the subway, on break, or anywhere else, turning your phone into a high-powered handheld console.
Sonic winked at the fourth wall. “Maybe. But you forgot one thing, Thunder. We’re not just a game. We’re Sonic Mania Plus . And we’re always plus one.”
Sonic Mania Plus Android by Thunder Playz: A Fan-Made Marvel Explained