Surprisingly fun (and frustrating)!
Took me a couple minutes to realize I had to move my mouse in the same direction that I start leaning over - this felt counter intuitive to me personally, I think it would make more sense the other way around.
I also think the mouse sensitivity is waaaaay to high - it feels almost impossible to make the micro adjustments you need to stay straight.
Pedaling also seemed a bit odd - it seems like you have to start with the right foot or else you go backwards?
With some adjustments to make the bike a bit easier to ride, I could see this turning into a very fun game navigating obstacle courses.