Alright.
A nice time trial kind of a game. Personally, I dig the idea. It has very good presentation, great atmospheric music and minimalistic yet slick visual design. Even for a demo, it feels somewhat complete and with a specific design in mind. Still, i think the level design, while varied (be it in level length, the amount and difficulty of shortcuts, the amount of turns and straight sections, etc), is a bit rough around the edges. In particular, the shortcuts were too, in a sense, on-the-nose for my taste, because they are usually more straight that the main track and don't require as much sharp turns. I think they should be made a bit more difficult all-around.
The controls (erroneously stated as a "three-button control scheme"™) are good but not as clear as they could've been. I don't really get the need to dedicate four buttons for each turn, since the plane's rotated by the same angle, but eh. I think you also need to work on accelerating aspect before the release of the full game and make in a bit more intuitive. I like that for optimal straight movement one needs to develop a certain rhythm of alternating the left and right keys (because there's a very subtle acceleration to turning), and that you still need to alternate the keys even during turns if you don't want to lose speed, but there should definitely be a speed indicator of sorts (yeah, the sound of the engine's getting louder, that's a very nice touch, but it's not a good metric of your speed).
The game is also quite buggy though. In particular, one can start to boost before the level has loaded, guaranteeing a full speed on start-up. Also, audio hiccups on level start, times sometimes not registering on the scoreboard and the screen becoming green by managing to select the level twice aside, there's a bug that threatens the integrity of the whole competition. Very seldomly (the timing is kinda strict on this one), if you perform the aforementioned boost, your will quickly accelerate to a ludicrous speed which can't be obtained normally, allowing you to complete the levels much much faster (1 or 2 seconds depending on a level). I am quite certain that the scores of two gentlemen on top of the leaderboards are fraudulent, and they either found a way to consistently abuse the bug, or waited for it to trigger on all of the levels. Unfortunately, i haven't found a way to reproduce the bug in a consistent manner. I think it's reasonable to get times in the range 37-39 secs tops without it - please correct me if i'm wrong.
Overall, i'm satisfied with the demo, even if feels a bit undercooked. Still, i'll be sure to follow the project, since it has some potential in various level playstyles and designs and replayability with upgrades. 7/10.
also please add baloo from talespin as a secret unlockable k thx