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Jagex unveils RS4, a fourth RuneScape MMO built on Unreal Engine

Jagex revealed RS4 at RuneFest, a new RuneScape MMO built with Unreal Engine, alongside a short trailer showing dragon riding and combat. The game is set in the Sixth Age, years after RuneScape: Dragonwilds, starting players in the Ashenfall region, and Jagex says it will complement rather than replace existing RuneScape titles. Jagex also announced a RuneScape animated series in early development with Lyrical Animation and YouTuber MoistCr1TiKaL.

Jagex confirms RuneScape 4 in early development, built in Unreal Engine

Jagex announced a new numbered RuneScape MMO, working title RS4, at RuneFest 2026—the first sequel since RuneScape 3 in 2013. The project started as a planned expansion to RuneScape: Dragonwilds, Jagex's Unreal Engine 5 survival game, but became a standalone title after playtesters asked for a traditional MMO set in the same world. Jagex released only a CGI teaser showing Ashenfall years after Dragonwilds, with no gameplay, platforms, engine version or release window confirmed.

Ex-Jagex Developer Sentenced for Stealing $493K in RuneScape Virtual Gold

Andrew Lakeman, a former Old School RuneScape developer at Jagex, was sentenced after a years-long investigation found he abused his internal access to steal players' virtual gold and items starting around 2018. He converted roughly £300,000 of stolen in-game currency, along with other funds, into about £364,829 in cryptocurrency before Cambridgeshire police caught him following an internal trap set by Jagex.

Ex-Jagex developer sentenced for stealing $400,000 in OSRS virtual gold

Andrew Lakeman, a former Jagex employee known as Mod Jed who worked on Old School RuneScape since 2015, received a three-year suspended prison sentence after being convicted of stealing over $400,000 worth of in-game gold and selling it on black market sites. Jagex uncovered the scheme after noticing suspicious account recovery patterns starting in 2018, then secretly altered its firewall setup to trace the thefts back to him.

How 2004's RuneScape squeezed a 3D multiplayer world onto 56k dial-up

A technical retrospective examines a decompiled 2004 RuneScape 2 client to explain how Jagex packed a 3D game world with up to a couple thousand concurrent players onto connections as slow as 5 KB/s. The analysis traces a single player movement command byte-by-byte from click to server to another player's screen, revealing the extreme data-efficiency techniques used. These core network principles reportedly persisted from RuneScape Classic through to Old School RuneScape and RuneScape 3 today.