Amplitude may be the sequel to Frequency, but it can be argued they go for very different aesthetics and game designs despite the core of its gameplay being the same. You still have to fly along a musical track, with each one denoting the different instruments that all play together if you keep a consistent combo. It becomes different now that the tracks are laid flat instead of a circle, so you have to zip left and right instead of turning a 180. I personally don't like that you can't loop from one end to the other, but if you're good at doing combos it shouldn't be too different. Aside from that, I find the aesthetic of Amplitude to be more pleasing. It has grungy and futuristic metropolises that you traverse, you get goofy 3D avatars as your icons, and it's overall a more defined world than Frequency. Of course this is a rhythm game, so how's the music itself? Honestly, it's a hit-or-miss collection of 90s and 00s punk/grunge/pop remixes that really show their age. If you're into reliving the days of P!nk, Slipknot, and Blink-182, by all means you'll love diving into this. One other point I'll give Amplitude over its predecessor is that the time input is not as harsh or as unresponsive, so I was able to finish the game. It's just as difficult though, so don't think of it as an easy ride either. Taking it holistically, Amplitude is a fine rhythm game that I wish was explored a lot more because it has so much potential. If you're not a rhythm game fan however, you're not missing out on too much as it isn't very beginner friendly.