3D Sonic the Hedgehog is a port with a few modern tweaks. You can spin dash just like in Sonic the Hedgehog 2 and Sega added save states. Want to play the original game? There’s an option to turn spin dashes off and remap the buttons. Sonic maniacs might appreciate being able to switch between the Japanese release and International version to see minor differences when it comes to bonuses. You can even choose the sound emulation based on the Sega Genesis or the Sega Genesis model 2.
One other neat feature is you can switch between normal mode and a faux CRT classic mode. 3D graphics can be set to depth or zoom.
3D Sonic the Hedgehog comes out in Japan as an eShop download on May 15 for 600 yen ($6).