For someone who wrote an article on how to write a successful game.. You should have some idea
But seriously this is too open ended a question. It's even to hard to define what is 'good' as opinions differ. Was flappy birds good? Then I could create one in 5 min using the C2 template
When I saw this topic, I was thinking to answer it with flappybird aswell
Flappy bird is in my humble opinion a bad game. However, it is very succesfull. Which I still don't understant why
Anyway, I would say with C2 it is possible to make a succesfull game within a couple of hours perhaps minutes with flappy bird template.