Confirmed Official source
What engine is RS4 built in?
Unreal Engine. Jagex has not shared further technical details such as graphics targets.
Last checked
RS4 Unreal Engine Facts
RS4 is built in Unreal Engine, Jagex confirmed when it revealed the new RuneScape MMO at RuneFest 2026. Jagex has not shared engine details such as graphics targets or platforms, and the choice alone does not confirm which devices RS4 will run on.
What Jagex said
"At RuneFest, we gave you the first glimpse of something we've been quietly working on: an entirely new RuneScape MMORPG, built in Unreal Engine and set in the world of Gielinor."
"We want to build on the best of the tech development we've learned on Dragonwilds…"
What it means
RS4 is built in Unreal Engine, like Dragonwilds, whose technology work Jagex says RS4 builds on. Graphics targets, system requirements and platforms have not been shared.
What to watch next
Technical details such as requirements and platforms are open questions; Jagex points to 2027 for more about the game.
Related answers
Not announced Official source
Which platforms is RS4 coming to?
Not announced. Jagex lists platforms among the questions it says it is too early to answer.
Last checked
Related updates
Jagex Reveals a New RuneScape MMO, RS4, at RuneFest
Jagex has confirmed an entirely new RuneScape MMORPG, working title RS4, built in Unreal Engine and beginning in Ashenfall. It is still a few years away.