Pretty nice, but very buggy and the atmosphere just isn't right... ... There's a mysterious person talking to you and it's so vibrant and the sound effects are so childish. It's just not right. 3/5
Maybe the Video Galleries should be longer and have a story, to make it more fun than just viewing short animations that are looped. Seriously, when I saw the first animation it let me down.
Guide on How to Get Hard Badge: Do small "U" slopes at the start, where the Solipskier will launch out of the screen. When you see stars on the ghost image of him, draw a small "U" slope. This will guarantee you getting almost an added x1 multiplier and by the time you see the first gate, you would have gotten about x10. Next, try and get all the gates and by the time you go really fast you should have already gotten about x80. Note: Tunnels are good as they boost your speed and multiplier by quite a lot and are easy.
By adding an interesting encyclopedia to the game and simplifying it, you have saved my woes of trying to understand Wikipedia. The humour was a great addition and the music fits the theme. I like how the game toughens up a little, later in the game.