It took me a little over an hour to finish the game. The entire thing is free, it’s not just a demo- that being said, you can either pay a super small amount one time ($2 I think) or watch one 30-sec ad to advance to the next level each time. So the whole game is entirely free, if you’re willing to watch some ads here and there (and the ads only happen between levels so they don’t interrupt the gameplay). And honestly, there are still less ads than any other free game I’ve played.
The beginning felt a little slow but the more I played, I thought “….ohhhhhh!” It’s so worth it. I love the little details, the mechanics are super easy (literally just a joystick on the left and tap on the right), the story is beautiful and simple at the same time, and it isn’t too difficult - the levels get a little harder as you progress but it only took a few retries to complete them.
I love the development of the story and characters (even though there’s only two, being a bird and a spike-alien but they’re both interesting nonetheless) and I felt engaged in the story.
I definitely recommend this game, and I hope for more from this developer in the future!