There is no official "Sonic Dimensions" game released by SEGA for Android. Any APK claiming to be "Sonic Dimensions" is likely:

Since you won’t find this game on the Play Store, manual installation (sideloading) is required. However, downloading APKs from untrusted sources is the number one way Android users encounter malware. Follow this step-by-step guide to minimize risk.

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: Characters can perform homing attacks, stomps, double jumps, and midair tricks.

Scan the downloaded APK file with a mobile antivirus tool before clicking install.

Look for download links shared within trusted Sonic fan communities, such as Sonic Fan Games HQ (SFGHQ) or dedicated Reddit communities (like r/sonicfangames). Community-vetted links are significantly safer than random Google search results. Safe Alternatives for Sonic on Android

: Some entries describe a "Sonic Dimensions" mobile-exclusive game, but these often refer to fictional or "fanon" concepts rather than a widely available, verified APK.

Once the installation is complete, tap to launch the game or find it in your app drawer. System Requirements for Android

Sonic Dimensions is a celebrated, non-profit fan game originally developed by independent creator SonicFreak94. Built using the Sonic Blitz engine, the game captured the hearts of fans by blending classic 2D high-speed platforming with modern design elements. Key Features of the Original Game

Challenge creative, multi-phase boss fights that require strategy and quick reflexes.

Please be aware that downloading and installing APK files can pose security risks if not done properly. Always use caution and consider using official channels, such as Google Play Store, to download and install apps.