Bem, o que posso dizer...Audiosurf 2...
Tem gráficos interessantes, com um novo modo de jogo em que tu realmente surfa na música, e pode dar pulos muito altos para fazer manobras e ganhar pontos. (No começo, achei que fosse livre para tu girar como quiser no ar, mas não é xD). Além disso, você pode baixar coisas na Workshop, tanto Mods, quanto Skins, as que eu baixei e tenho aqui são boas, uma grande variedade, além do pessoal inovar bastante nos Mods, para criar novos modos de jogo.
Poréééém, nem tudo é perfeito né? :P
Pelo fato do jogo ainda estar em Acesso Antecipado, ele ainda tem seus bugs, que por muitas vezes, é frustrante. O menu principal do jogo ainda é muito confuso, comparado com o do Audiosurf 1, você no começo se perde, mas depois vai pegando o jeito.
Isso que eu citarei agora, não sei se é só comigo, mas vou falar só para constar...muitas vezes, quando eu vou carregar uma música, o jogo trava na tela de Load e para de responder.
Outra coisa também, é os modos de jogos que são meio "repetitivos", que não trazem aquela "jogabilidade" nova que nem havia no 1, em que naves haviam poderes diferentes para auxiliar nas combinações das cores.

Acho que minha análise foi essa. Eu recomendo esse jogo se caso você for alguém paciente para lidar com o Acesso Antecipado dele, tendo em mente tudo que pode mudar ou ocorrer (Como os bugs citados acima, ou outras coisas)
Nada te impede de jogar as músicas como antigamente, só não se esqueça que...o jogo ainda não tem tanta variedade assim, se você quer variedades, acesse a oficina e explore tudo por lá!
Se tu comprar o jogo, bom divertimento :)

8,5/10

I've played hundreds of hours on Audiosurf 1 (non-steam), and past more than 100 on Audiosurf 2. The one thing to make clear is this: Audiosurf 2 is in beta and is not slightly, but extremely unfinished. I have updated my review to reflect my evaluation of the game as of the Dethrone update. In-depth review incoming:

===========Pros over Audiosurf 1=============

-- Better graphics, and skin mods.
The graphics possible in the new engine blow Audiosurf 1 out of the water without question. If you're an eye-candy lover this is great, and the integration of highly moddable skins makes the limit of eye-candy quite high.

--Better engine.
It's without a doubt that the new engine being used is better and will offer far more if devs or mod makers take advantage.

--Mods
Anyone can try their hand and creating their dream game mode, and this will surely be the lifeblood of the game after it releases. Whatever failings in design the developer may make in our eyes, the fix will be just a couple of code lines away.

--Separate score boards for modes
Quite a welcome addition. This puts an end to all the crying about "balance" (mainly from Mono players) of all the modes competing on the same score board.

--Support for many sound file formats like FLAC and some platforms like Soundcloud

--Challenges/Dethrones
The newest update to the game has added a friendly and easy competitive framework to the game. It's far cleaner and quicker than having to trudge through AS1's scoreboards. This in-game framework was not something available in AS1, and allows you to see what is popular per mode so you can be competitive with strangers even in unpopular modes. Definitely a welcome addition if you're competitive

That's it for the pros.

==========Cons below Audiosurf 1.===========

--Lack of the classic modes.
Right now we have Mono...lots and lots of Mono, the wakeboard modes, pusher, and a new version of double-vision. Yes, there is a Vegas fan mod (not very good), a classic eraser mod (doesn't feel right), some actually novel game modes (about 3), but for the most part we have LOTS of Mono, and a few mixes and mashes of said already official modes. Suffice to say, since the majority of the player base is mono players from 1 and 2 anyways, if you like Mono modes then this is your game.

--Lack of functioning key mapping for keyboard or gamepad
You would think that a functioning input scheme would be a high priority, but apparently not. Keymapping does not have any effect, and gamepads are only useful for mono since only the analog sticks and start button work in game.

--Unfinished UI functionality
The Dethrones update added a great boost to UI responsiveness which is now on par or better than AS1. The UI still needs quite a bit of work to be considered finished compared to Audiosurf 1. Game pads are not supported for UI navigation, only mouse and keyboard.

--Reloading tracks every time (even just for a track restart)
The capacity to save track schemes in Audiosurf 1 for quickly loading in your song is gone. Restarting your song before it ends also requires a reload of the entire track, very annoying.

That's it for the major cons I see.

Suffice to say, the biggest con of all is this:

The developer seems to work at a snail's pace averaging one update a month with the majority being skin functionalities inconsquential to gameplay or UI. It also needs to mentioned that the dev went silent for almost three months without a word about the state of the game's development. Community interaction is important, and while surprises are nice, it would be nicer if the dev took less than one minute in the future to at least say he's still alive and working on the game.

==========Should you buy it?=============

Overall, if you liked the variety and functionality of Audiosurf 1 I cannot recommend Audiosurf 2 for now. The Dethrone update was a leap in graphic quality and UI responsiveness and functionality, but variety the likes of Audiosurf 1 is still lacking in my opinion. Yes, there is wakeboard, yes there are some very new mode mods like Audiosphere, but in my opinion these are poor modes compared to AS1's. As some other reviewers have said, the game is lacking the puzzle game elements of Audiosurf one and focusing on simple mono like modes where powerups like paints have no place.

If you have never played Audiosurf 1 and are wondering whether you should get Audiosurf 2, I recommend you buy Audiosurf 1 instead.

If you don't mind the lack of variety, bugs, and general incompleteness of areas of the game that you have no interest in then buy at your own discretion.

9/10 Game Play -
It retains those funny mods in audiosurf1. What's more, it develops a new surfing mod that we could truly surfing our music, pretty fantastic. But I feel its synchronization is not good as audiosurf1.

10/10 Graphics -
Audiosurf2 uses cool colors, with 3 kinds of skins. Gaming likes lightning and Tsunami, very cool.

9/10 Sound -
Totally depended on your own music library.

5/10 Difficulty -
More difficuty than it before, very fast. Even me can not suit the high speed mod. And the surfing mod has more playing techniques, slowly enjoy it.

10/10 Lasting Appeal -
Music games never have their ends, and you can never finish those mods.

Total Score - 43/50 Extrem Gut

Love this game to just relax in the evenings after work playing some music, I like it more than the first one since this has an integrated workshop & you can beat other people by getting a higher score!

Also if you like music then you'll probably enjoy this too.
10/10

This is absolutely AWESOME especially the WAKEBOARD mode. LITERALLY, RIDE YOUR OWN MUSIC... if you prefer animal sounds or a recording of your boss' voice while going ballistic about your unpunctuality, YOU CAN RIDE IT. Just plug in almost any sound file in the game. But preferably put your own music that pumps you up. ITS ALL ABOUT THE WAVE DUDE. RIDE OR DIE. I'm sure there are a lot more GOOD things to come when this game is complete!

PS
Don't lose your job.