Linux game development in 2015

There are so many articles about how to do games using Windows with engines such as Unity and flipping art from assets stores. But really there are not many articles about alternative development processes such as building under Linux using a cheap and open-source approach. 

For instance, I just finished my last game: Infinitrap, this game tooks me around 200 hours to complete including the code, artwork, music and level editing. With the proper tools I found the development process quite straight-forward.