all in game ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ this is platformer. you can remix it and make mor levels so if you want to remix and make your own level you must first go to level art. here is showed how it be look. next you must go to level hit box. here is showed where you can walk and stand on it.
art 99% by meh! credits to: @23ScrathMan ( https://scratch.mit.edu/projects/283414764/ ) for the engine