From BigPackets Game Hacking Wiki

GameDeception used to be a Game Hacking website dedicated to Reverse Engineering.

Apperantly, the site provided tons of knowledge on reversing, game hacking and eveyrthing related to it. There were no skids on it like UnknownCheats, so it would have been perfect (foar coderzz xdd) if it was up and running today.

It was suddenly shut down.

Rumors say that there are still backups of the forum, but kept very private.