Microtransaction, also microtheft, is the practice of selling -- for a relatively "low" price -- virtual goods in some virtual environment, especially games, by the owner of that environment. It's a popular business model of many capitalist games -- players have an "option" (which they are pushed to take) to buy things such as skins and purely cosmetic items but also items giving an unfair advantage over other players (in-game currency, stronger weapons, faster leveling, ...). This is often targeted at children.
Not only don't they show you the source code they run on your computer, not only don't they even give you an independently playable copy of the game you paid for, not only do they spy on you, they also have the audacity to ask for more and more money after you've already paid for the thing that abuses you.
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