This is absolutely one of the best ways to play Sonic 1 alongside the original Genesis version on a CRT. The additional options and characters are great for revisiting the game in a different flavor, and it combines that with the Retro Engine improvements like widescreen and higher quality music. The built in mod support is nice, and the goodies like boss rush and the golf mode are great as well. I would have liked for physics tweaks in this as well to bring the game feel in line with Sonic 2, though I know that's kinda a big ask from a project like this.