There are 3 scenes at the moment, because it's the first time I try to monetize a game, so I needed the proof of concept. I use new tool called Unity Mediation to show Unity ads.
Scene list:
1) Singing bird.
2) Hide and seek snail.
3) Disappearing butterfly.
Also game contains main menu with custom buttons that I drew in Adobe Photoshop. All other pictures are also drawn by me.