This is probably the best version of Sonic CD to date. If you don't know about Sonic CD, it's arguably the best Sonic game ever made. The HD port improves on it in almost every way. It's in full widescreen HD, and the graphics have been improved, though you can turn it back to the original graphics if you wish. The only reason I recommend this over every other Sonic CD port is the music. It has both the JP and US versions of the soundtrack. Fair enough. But this is a port of the Xbox 360 version of Sonic CD HD, in which the JP opening and ending music has been altered to have no singing, mostly because of copyright issues with the original Sonic CD music artists (the entire US Sonic CD music, opening, ending and all, have not been altered thankfully, it's just the JP soundtrack). Why I recommend the PC version over the other HD Sonic CD ports is that there is a mod that fixes the JP opening/ending. Now you can hear the opening tune "Toot Toot Sonic Warrior" and the ending tune "You Can Do Anything" as they were meant to be heard.