Penguin Hide and Seek glitch

The Penguin Hide and Seek Glitch was a glitch that occurred on 28 January 2008 involving the Distractions and Diversions Penguin Hide and Seek. Players discovered the glitch when they found out they could spy on the same penguin over and over again. As a result, players could gain 50 points in a short amount of time, visit Larry, trade them in for experience, and then return to the penguin to earn more points.

News of this glitch spread, and soon hundreds of players of all combat levels abused the glitch. It was possible to gain over 900,000 experience points an hour, and therefore most of the points were spent on skills such as Summoning, Slayer, and Runecrafting. Many players also realized that their familiars could block them and hard it harder for them to get reported, and so they used that to their advantage.

Honest players attempted to report the abusing players, but there were too many of them.

As of now, the glitch has been fixed. Meanwhile, Jagex has assured people on the official forums that the players who abused the glitch will not get away with it. According to Mod Poppy, Jagex has a program that can trace this type of data.