Thank you for your reply. It's very helpful for me.

Hi,

Factorio is a great game, I'm love it.
I'm curious about game programming.
Can I ask some question?

1. Why Allegro? Why not SDL, Cocos2d-x, SFML...etc
2. What version at Allegro? 4 or 5? And why?
3. Your programming architecture have use MVC? or like it? (it's mean split logic and view, if ...