To get really skilful at something, you got to do it a lot. An obvious way to learn games development is by building clones of existing games.

My brother showed me an article that prescribes a list of arcade classics to be developed by the aspiring programmer. Once you remake each of these games, you'll theoretically know all the fundamentals of game development. (This would also be a really good way to learn a new programming language.)

I started on a Tetris clone a long time back then forgot about it. But I recently remembered that I kind of, you know, need to learn how to make games. It's implemented in JavaScript and basically works, although the rotation algorithm is a bit smelly (i.e. wrong). I've pushed it to Github and you can find the source here.

Feel free to use the code in whatever way you like. It's obviously not perfect. I publish it to shame myself into improving it. Hopefully I'll find the time to do so.

Other people's software seems simple until you discover all the little details that accumulate over the life of the program. I won't aim for 100% of the functionality, since it's only a learning exercise. But I will endeavour to add a bit more here and there, possibly in parallel with the next game in the list - Breakout.