Sonic Mania Plus Announced - Siliconera

In Summer 2018, Sonic Mania Plus will be released. It will add Mighty and Ray as playable characters, as well as 4-player multiplayer and an Encore Mode.

Sega - Sonic The Hedgehog., Page 12

Sonic Mania Plus Announced - Siliconera

sonic mania plus » SEGAbits - #1 Source for SEGA News

sonic mania plus » SEGAbits - #1 Source for SEGA News

Sonic Mania/Sonic Mania Plus (2017/2018) Music – SoaH City

Sonic Mania Adventures: Part 1 Out Now - Siliconera

Sonic Mania Plus announced - Gematsu

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Sonic Mania Plus, Ultimate Pop Culture Wiki

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Sonic Mania: Most Up-to-Date Encyclopedia, News & Reviews

Sonic Mania Adventures PT.2 - Gaming

Sonic Mania Plus now has a release date