As with Frontiers proper, this makes me more excited for what Sonic Team does next instead of what I just played, just exacerbated to extremes. There are glimmers of promise here, I think the playable characters are solid or will be with a bit of tweaking, a lot of the levels are some of the best stuff in the game and magnify what's great about it, the revamped final boss is great, and some of the challenges are quite welcome compared to the main game. Then you have the tower climbs that don't respawn pieces for progression, awkward little "puzzles" and strange use of mechanics that don't feel particularly well-thought out or fun, 300% speed enemies, the awkward boss rush, I could go on... It's hard to know how to feel when I have whiplash from how often I went from "This is cool!" straight into "Oh, this is roooough...". Glad it was free at least.