awesome! what's the game engine do you use to create this game?

It seems not to be Unity. Do you create your own one?

I was sooooo much fascinated from this game! I wait for part II. If you publish source code, users may help to produce levels!!!!  

Wow, I just discovered this game. I've never seen the idea of the whole map on screen and a fish-eye lens idea. It took some getting used to, but I actually liked not having to switch back and forth to a map screen this way. The game is challenging but not controller-smashingly so. And the retro art style is super! One question: why is there a hidden stick that you can't get until after getting limitless air jumps? I think I found all the sticks, but had one remaining nest spot that I couldn't build until getting that last stick from under the map. I thought I mismanaged my sticks at first. Is this how it's supposed to be? It seems to be a great opportunity for a special message if you get all the sticks and build all the nests. Anyway, great job!

Don't know if something's wrong with my computer, but it's not showing up for me at all on the Birdsong page! Absolutely adore this game, one of my favourite platforming experiences.

Been a big fan of your games for many years. I hope you continue making them. I've finnished all of your games except this one. Time for another go.

btw all of your games run perfectly on linux through the use of wine. i haven't done any benchmarking but they seem to run better on linux than windows. most games do actually.

Aw, sweet! A classic being kind-of updated!