After reading a lot of posts, I decided the next toolkit:

• GameMaker Studio
• Pixen, GIMP, PixelEdit and  Pixelmator for graphics
• No idea of sound effects or audio. I think that the best option in this case is Bfxr
• GitHub to mantain and publish the code.

I don’t know if afterall I’ll do something playable, but it’ll be a full learning  experience.

X.