The flapping feels a little too sensitive at times and I often find that the smaller of the two obstacles is completely missed by sonar. However, these feel more like idiosyncrasies of the game rather than bugs that ruin the gameplay. Nice to play a game that's challenging enough to make double digit high scores something to brag about!
For those worried about the difficulty in getting the monkey, his health remains the same after being damaged and can be whittled down over multiple runs.
So far I've fallen through the terrain and remained floating around in the void several times, and now I've had to play through the first three levels a total of four times since one of the camps in level 3 keeps bugging and turning into the camp outside of the Ogre's lair in the first level. I enjoyed the game when it was working, but if it's not going to let me finish why bother playing it?
Thanks so much, that's a really big compliment :)