I never had Sonic Gems Collection as a kid so being able to play this for the first time was really cool back when it released. This was the official debut of the Retro Engine which went on to power Sonic Mania, as well as the Sonic 1 and 2 mobile ports. 16:9 and soundtrack swapping are great features, and playing as Tails is a cool bonus. Unfortunately they replaced the Japanese intro and credits music with instrumentals which is quite the travesty as I love both of those songs a LOT, definitely brings the experience down and I recommend modding them back in if you play on PC.