What are the game play rules?

Logging out or exiting the Game during live game-play. Riot Games’ automated Leaverbuster® system tracks this data over time and issues a temporary ban when a user is determine to have left mid-game too many times. The length of the temporary ban will increase over time if a particular account continues to leave live game play; -- Playing on another person’s account to “boost” that account’s status or rank -- Using any unauthorized third party programs, including mods, hacks, cheats, scripts, bots, trainers and automation programs that interact with the Software in any way, for any purpose, including any unauthorized third party programs that intercept, emulate, or redirect any communication between the Software and Riot Games and any unauthorized third party programs that collect information about the Game by reading areas of memory used by the Software to store information

Those are the only rules of game play that I could find. I'll edit if more are brought to my attention.

I'm actually concerned at the lack of game play rules. It's no wonder game play punishments are so rare.