To give an examples
Jurassic Park Builder has
1 a DNA research bit that flat FAILS about 40% of the time (and you have to pay 10 to 30K per try)
2 hatch times measured in DAYS
3 has recently added one of those 'get points to get "lottery tickets"' things
Dragons World has
1 a rolling set of "Buy Resource Pack and get special dragons" thing (at US$25 US$50 and US$100)
2 an rare system that about requires you to buy gems to get the best dragons
3 Wait times measured in DAYS
Dragon City has
1 a bunch of "social building" things that have you ask friends to help you with the build process.
Anybody wanna make one of these things thats actually FAIR??
my address is on the google commercial mail server if you want to find me on FB