Hello! This game is made with BuildBox free plan (3.1 version). The game has 5 scenes (not including START scene). You can download BuildBox 3.1 version for FREE here: https://www.buildbox.com/license-options/
and you will be able to have only 1 world, but UNLIMITED number of scenes. All of my games you can open in BuildBox free plan 3.1 version. If you purchase my games - all of them you can open and change in BuildBox 3.1 version (it is free, use the given link). You can easily re-skin them or upload on AppStore and Android. If you need my help - I will glad to provide it to you!