Sonic-mania-plus-usa-europe-xci-romslab.rar

If you are looking to play Sonic Mania on other platforms, it is highly accessible:

Expanded local multiplayer for up to four players. Understanding the File Breakdown SONIC-MANIA-PLUS-USA-EUROPE-XCI-ROMSLAB.rar

This identifies the specific group or site responsible for dumping and distributing the file. If you are looking to play Sonic Mania

This file extension is specific to Nintendo Switch cartridge dumps. SONIC-MANIA-PLUS-USA-EUROPE-XCI-ROMSLAB.rar