Top Definition
Applies during a sale via the Steam digital distribution platform. Newell's Law states "If you buy a discounted game before the last day of a sale, it will have a more substantial discount the next day." It is named for Gabe Newell, the CEO of Valve Software.

Alternate definition applies during non-sale events, in which case the decision is made after waiting and evaluating a game's worth to purchase at full retail, then the game goes on sale the very next weekend.
Gamer 1: "I bought the Civ4 complete pack yesterday for 33% off thinking it was a great deal, but if I had just waited until today I could have bought it for 75% off!"

Gamer 2: "Newell's Law."
by Trudatt June 27, 2010

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