[johnnyanmac]

Pokemon is the biggest example and it's been ingrained in fans for 25 years to

1. choose 1 or buy 2 versions of a game that is 90% the same (example, Gold or Silver, whose differences are in some dozen pokemon exclusive to one version) 2. a year or two out, receive a 3rd version with extra content charged at full price (Crystal). Often acting as the "definitive version" for that generation.

It's not the most common model, but a few other franchises outside of pokemon have definitely applied their own take on it (often Nintendo related ones).