Funlocking
Funlocking is the action taken by a game developer in which all parts to their game that can be defined as "Fun" are blocked by either hours of mind numbing grinding or a wallet draining paywall.
Free to play, Free to pay and Pay to win games are a prime example of developers funlocking games for their own gain.
Funlock
A blocked part of a game that can only be unlocked through strenuous hours of boring gameplay, or through small in game transactions.
A funlock is a way for game developers to earn some money, usually at the cost of having an unsatisfied community.