Sonic: Christmas Trouble (2017)

Sonic: Christmas Trouble is a festive, high-quality ROM hack of the original Sonic the Hedgehog for the Sega Genesis. First released for the Sonic Hacking Contest 2017, the project is a complete seasonal overhaul that replaces the standard levels with winter-themed environments.

• Release Date: December 31, 2017
• Developer: Team Brickheads