Additional features include 3D effects, the inclusion of the Spin Dash, Level Select available at the start without a cheat code (called "Special" Mode), A filter to display the game with a CRT-style look with blurred colors (no 3D), customizable controls, the choice between the Japanese and International versions, and the option to hear the sound using a Mega Drive or Mega Drive 2 style. The Japanese version is Rev. 01, along with changing spike damage behavior to act like Sonic 2 and later (like in Sonic Mega Collection); the International version is Rev. 00 with no modification to spike behavior.
The Spin Dash is slightly different from usual, as Sonic can still be damaged by collision with a moving Badnik while charging the move.
Nintendo eShop chart performance
Nintendo eShop reference
Monthly Nintendo eShop chart appearances
Weekly eShop chart appearances and rankings
Weeks on the eShop (original run / cumulative total)