Quote Originally Posted by Reynhart View Post
Who decides that ?
"In some multiplayer free-to-play games, players who are willing to pay for special items or downloadable content may be able to gain a significant advantage over those playing for free. Some critics of such games call them "pay-to-win" or "p2w" games. A common suggestion for avoiding pay-to-win is that payments should only be used to broaden the experience without affecting gameplay.[34]"

Per Wikipedia.

This is pretty much the only place to find a hard definition of the term. If you can find another one, feel free to provide it.