After events of Boxguy Adventure and Boxguy's Puresabe Adventure. Boxguy decides to take vacation on South Island and has a good time until Dr. Robotnik decides to take over the robotize all of it. Sonic not around because of the events of Sonic Forces. So Boxguy goes to stop Robotnik.
A Rom Hack of the 8-bit version of Sonic the Hedgehog for the Sega Master System that adds new levels and lets you play as Boxguy, features custom levels, graphical changes among other things.
