High Quality Content by WIKIPEDIA articles! RuneScape is a fantasy massively multiplayer online role-playing game (MMORPG) released in January 2001 by Andrew and Paul Gower, and developed and published by Jagex Games Studio. It is a graphical browser game implemented on the client-side in Java, and incorporates 3D rendering. The game has approximately 10 million active accounts per month, over 156 million registered accounts, and is recognised by the Guinness World Records as the world`s most popular free MMORPG.