A ruby 2d game for beginners

I developed a general purpose code for 2D game platform using Ruby Language. This code is not supposed to be the game itself, but many fragments in a very simple way to be the foundations for any other games. It comes to be handy when you find many of these implementations already done, needing just some adjustments to fulfill your needs.

Therefore, this is is a very basic programming project. It has been built to help to teach programming for teens. I hope you find it useful! Feel free to evaluate and try yourself the codes for further improvements.

Thank you very much.