is for you. Read it, understand it, it has the answers to your questions.
Also you have a "Search on the forum
" option in the "sub" top bar (under Home, Make games, etc...) and using it would have linked you to the topic covering the subject.
It is possible, but a lot of work. If your skillful enough and/or determined to learn and take the time good luck to you and keep us posted about your game.