This along with Mania proves to me that Nostalgia can be done right when handled well. That aside, Generations is a great entry and really did make everyone think Sonic was going in the right direction again... then Lost World happened (But I actually don't think that game is that bad so hey.)... then Boom. Yeah hopefully in the future with Frontiers 2 or whatever they're cooking, Sonic gets back on the right track which seems to be the case. Anyways I'm getting sidetracked. This game oozes of love and charm and I adore it. The stage picks are all great, and even better. They're all very fun to play! Now I know people don't like Planet Wisp, but honestly and I don't know if this is a hot take or not, but I personally think it's a good final level and enjoyed both acts, but that's just me. Point is, the levels are beautifully crafted and I love how sometimes you can feel the familiarity, but also something brand new with these levels. The boost levels are pure bliss and amazing to play. So amazing that it unfortunately makes it harder for most people to play the Act 1 levels again. I mean look at the modding community. Most level mods are just more boost levels with the occasional Classic level. Even then, there's nothing wrong with Classic Sonic. He doesn't feel as good as he did in the original games, but he still feels like a blast to play as, along with his set of levels. The challenges are a nice side offering and can offer extra fun to be had. That along with the songs that you may get from them. The bosses are a lot better than I remember actually too. Although the last one is not only too easy, but annoying to chase down, and doesn't feel satisfying at all to fight (Not like Final bosses in Sonic are really supposed to be hard, but they at least had the spectacle, and are still fun.). Overall this is an amazing celebration to Sonic and I would easily recommend it if you want to start somewhere with this franchise. It's aged well in terms of everything, and has two sides of a coin.