Well polished and a nice continuous flying type of game. Liked the gui and the way it all works, buttons and all, and all the ingame stuff that comes along keep things interesting and challenging.
I think my only issue (taking into account im not that good at these kinda games
) is the rise and fall. I sometimes struggled up and down, id go down, miss time going up and cant stop myself continuing up too quickly and end up being caught by blades or something lol I tried to compensate this by quickly/gently tapping the key to go up and carefully tapping while wanting to drop - but then the piggy squeal up/down sound started to bug me just a tiny bit. so yeah, maybe depends on player (and the fact im not good at these games), but this is the only thing that got me after playing for 10-15 minutes.
Oh one last thing, just so you know.. it *could* have been my browser, or possibly fgl, but the game crashed on me when i hit one of the pig cages - the interface appeared, and then it just hung, with the music playing. I tried pausing/unpausing, and hitting a few keys, and it came up with 'paused' on screen.. but nothing i did would make it continue or work again, so i had to f5.
Good luck with it anyhow! Should do well