This is possible, yeah. But if there're a lot of game dynamics with facts and figures you musst know off the head to work fast this becomes a little more complicated - and that's not about code, it's just about the complexity of a mathematical or logical problem.

It's one thing to draw the head for a model a year later than the body (except your style changed drastically) and another to know, how a whole game works and how the two lines long equation works.