How do you create fancy effects for your games? A game that does this very well, is twofold inc. Every touch is very responsive, things bounce and slide around and everything feels very satisfying. An example is that when you complete a line, there is a little line in the same color that flies up to...

should be -
Alternatively, you can simply write which does the same thing

wow, very cool!!

I've also been wondering how to structure all those things! Would also greatly appreciate an answer

Doesn't matter, as long as the answer is helpful

How do you make an actual game? By that I mean a game that is professional and can be released. There seems to be a lot of stuff going on, like gamestates, menus, graphical effects and a lot more, doesn't the code become cluttered? How do professional game developers structure their games?

I speak Norwegian if you need help with that

I'm using the 0.10.0 version.

Do I need to register a user if I want to post an issue?

EDIT: Try to avoid Martin's android-sdl port (terrific work but there's official support now).

What do you mean by Martin's port? Isn't that the official Löve one?