Need help for the making of a game !

Hello I am new to Gdevelop, I would like to create a game similar to this one could someone explain to me or give me directions, links? to be able to do it?
and also i want to export the game on android, i would like to know how is the screen size management with gdevelop to make an android game! thank you in advance for your help !

Hi! Try this … ssets.html
or search jumpy in topic. Hope this help.