I don't really know what to say about this free dlc. It's just more Sonic Frontiers. You run around, collect stuff, beat cyberspace levels, upgrade, etc. The big hook here is that Amy, Tails, and Knuckles are all playable here!

The story is basically an alternate "what if" scenario of what happens on the final island in the original game. Many people didn't like how the original game wrapped up, and while I didn't mind it, I think it could have had room for some improvement. This dlc aims to solve that with a new final boss and finale as well as more involvement with Sonic's friends in the story. To be honest, I don't know which finale I prefer. The original, or the one here in the dlc. At the very least, Sega left enough room for both of these to be considered canon. I suppose it comes down to personal preference.

I don't know why everyone is up in arms about the difficulty here. I honestly found most of this to be fairly easy, and I was playing on hard. The towers were fun to climb, some of the trials were a good test of skill, and the cyberspace levels are much better here then they are in the original game. I think Amy, Tails, and Knuckles are all fun to play. I see what people mean by Knuckles gliding here, but I got used to it after a bit. Special shoutout though to Master King Koko. He's the only thing in this dlc that I will admit is actually bullshit in difficulty. Don't be ashamed to switch to easy for his trial.

That's really it. If you liked base Sonic Frontiers, chances are you will like this. I certainly did!