Press flag twice when restarting -- you may encounter issues pressing it only once.
ESR = Engine Scrolling Remix Plan to include rings/platforms for Alpha 1.2, not entirely sure. I will also implement "lives", losing all three sends you back to the first act of a zone, as well as "saves", so you can save and load your progress whenever necessary. Speaking of which, I will allow Sonic to lose a life when touching an obstacle having no spikes or falling off the map. I have yet to figure out the mechanic for "being squished". I also plan to eventually synchronize and optimize it so you wouldn't need to refresh the game by having to click the flag more than once. Alpha 1.1 specifically for the first of five games, Sonic 1, featuring 2 acts of Green Hill Zone. OST included. May plan to append SFX once I'm available to. Reappended flowers and spikes in scrolling context. Third act will feature a battle with Dr. Eggman, but I am unable to retrieve Eggman sprites for specific reasons I am unable to share. Other zones in the works. All credits to @Enigmatic21, just wanted to apply my remixed soundtracks and some low-quality act designs. Remixes will arrive soon; this is just a scrolling makeup for now.