Sonic 2 Aluminium Edition Version 3.1 is a ROM hack, with 'Aluminium Edition' likely referencing a specific visual style or theme applied to the game. Version 3.1 suggests it's a refined iteration of the hack, implying bug fixes and potential improvements to gameplay or visuals from previous releases. The core gameplay would likely stick to Sonic 2's formula but would present a modified aesthetic and potentially some adjustments to the game's content. This hack was created independently by the ROM hacking community.

Sonic 2 Aluminium Edition Version 3.1

Sonic 2 Adventure Control