These projects are unofficial. SEGA has historically been lenient with fan games but has occasionally taken down full unauthorized mobile ports that compete with their official offerings. The Decompilation Method
Several creators have uploaded "Sonic Mania Android Port" projects to Game Jolt. Examples include versions by developers like ArtemFedotov and Creeps097YT . These are often built using the Retro Engine (RSDK) or custom engines like the Sonic Mania: Base Android project. Sonic Mania Android Apk Download Game Jolt LINK
Some listings, like Sonic Mania Addendum , offer reworked experiences with additional characters like Amy Rose. These projects are unofficial
Game Jolt is a hub for independent developers and the Sonic fan community. Because SEGA has not released a standalone paid version of Sonic Mania for Android, fans have stepped in with various projects: Game Jolt is a hub for independent developers