Riot's Runeterra MMO Runs on Unreal Engine

Engine

Unreal Engine

Actively building

ReadIn production

EngineUnreal

Open roles2

StudiosLos Angeles, Sydney

Riot's 2020 reveal art for its Runeterra MMO. Six years on, the job board reads less like concepting and more like construction.

How we know, and what's different this time: Riot's MMO is dark, but its hiring is public. Riot lists MMO roles on its Greenhouse careers board under the product tag MMO, filed as an "Unpublished R&D Product." Last time we only read the job titles. This time we read the full postings, responsibilities and requirements and all, and the difference is the whole point. The roles are real; the interpretation is ours.

One World, Every Game

Whatever Riot builds, it is not starting from a blank page. Every game the studio ships lives on one map. The MMO is not a new universe, it is the one you already play in.

Runeterra. The continent every Riot game draws from, and the ground an MMO would have to fill.

The technical-artist role wants character systems that "scale effectively across massive multiplayer environments." Runeterra already has somewhere to put them. Thirteen regions are mapped, illustrated, and voiced, each with its own factions, heroes, and history.

Demacia

Noxus

Ionia

Piltover

Zaun

Freljord

Shurima

Ixtal

Bilgewater

Targon

Shadow Isles

Bandle City

Void

The Tech Tell: Unreal Engine

The tech tell

Built on Unreal Engine

Both listings name Unreal Engine by title. They do not say "MMO." They say Unreal, massively multiplayer, and a live server fleet with people already on call. That reads like a running game, not a pitch deck.

Both open Riot MMO listings name Unreal Engine by title.

EngineUnreal Engine

ScaleMassive multiplayer environments

ServerDistributed fleet, live on-call rotation

AnimationPlayer, NPC and creature pipelines

Riot has built its own engines before, but the postings put this MMO on a commercial, modern toolchain instead. The technical-artist role wants "deep expertise with Unreal Engine animation workflows," down to Control Rig and Sequencer. The Sydney manager wants engineers who have shipped "real-time online multiplayer games using Unreal Engine." When a studio names the engine in the requirements, that decision is already made.

The Roles, Read in Full

2 roles are open, in Los Angeles and Sydney. Here is what each one actually asks for, and what that tells us. Tap a role.

Senior Technical Artist, Animation - Unpublished R&D Product

Location: Los Angeles, USA

As a Senior Technical Artist (Technical Animation) , you’ll define and maintain the systems that bring our characters and creatures to life including complex animation state machines, layered interactions, and IK-driven behaviors in our upcoming MMO.

What the role actually does

Build and maintain complex animation state machines, layered animation systems, and override logic supporting split-body for player characters, NPCs, creatures, and props.
Collaborate with animators, character tech artists, and designers to develop efficient, believable, and tech-friendly animation flows.
Define best practices for animation setup while owning the debuggability, documentation, maintainability, and long-term health of animation blueprints and graphs within Unreal Engine.
Partner with engineers to build and evolve animation runtime systems and debugging workflows.
Drive optimization efforts across animation assets and graphs to meet performance and memory targets.
Collaborate with cross-discipline partners to ensure character systems scale effectively across massive multiplayer environments.

What they are asking for

8+ years of professional experience as a technical animator or technical artist in games or related industries.
Deep expertise with Unreal Engine animation workflows, including complex Animation Blueprints, state machines, blend spaces, and layered animation systems.
Proven experience designing scalable, reusable animation systems for large-scope character setups, including players, NPCs, and creatures.
Experience with Unreal Control Rig and Sequencer
Familiarity with C++ and/or Python within Unreal Engine.

What it signals:It confirms the engine. This MMO is being built in Unreal Engine, not a bespoke in-house engine. Riot chose to stand on a shipping, modern toolchain, which is a pragmatic call for a project this size.
It is staffing for content, not just heroes. The posting names players, NPCs, and creatures in the same breath and asks for retargeting that supports "creatures of varying proportions while minimizing animation counts." You only optimize for many creature types when you plan to build many. That is bestiary work, the raw material of a world full of things to fight.
It is built for scale from the animation layer up. The role asks for character systems that "scale effectively across massive multiplayer environments." This is not a vertical slice. It is pipeline work for a populated world.
The team is global and built to last. A follow-the-sun structure spanning Los Angeles and Sydney is what you build for sustained, multi-year development, not a prototype.

Read the full posting on Riot's careers board.

Manager, Software Engineering, Automation & Build Systems, Unpublished R&D Product

Location: Sydney, Australia

At Riot, we believe in putting players first. Our Sydney-based team contributes to the unpublished R&D Product, collaborating globally to build next-generation features and technology. Whether focused on automation, performance, tools, or build systems, we create the foundations for great developer and player experiences.

What the role actually does

Lead and mentor a team of 2 to 6 engineers through all phases of product development.
Work across time zones to set the technical direction, in partnership with product and discipline leads, driving clarity and alignment on priorities.
Design and implement solutions for large scale automation and build tooling across a distributed network of servers.
Lead architecture requirements, technical design, and hands-on implementation across relevant systems, shaping the team’s technical direction and standards.

What they are asking for

6+ years of development experience as a software engineer, including shipping one or more games or products on large code bases that span a range of platforms and tools.
2+ years experience directly leading engineering teams as a people manager.
Proficient in C and C++, with strong debugging skills and a solid foundation in common game and software design patterns.
Experience developing real-time online multiplayer games using Unreal Engine (or similar engine), with expertise in automation tooling, performance tooling, build pipelines, and/or telemetry.
Bachelor’s degree in Computer Science or equivalent experience.

What it signals:It confirms the engine. This MMO is being built in Unreal Engine, not a bespoke in-house engine. Riot chose to stand on a shipping, modern toolchain, which is a pragmatic call for a project this size.
It points at a real, growing codebase. You do not hire a manager for automation and build tooling "across a distributed network of servers" unless there is a large, active codebase and a server fleet to keep healthy.
Something is already running. An on-call rotation for live-service issues means internal builds and servers are up around the clock, a milestone you only reach once the thing is playable enough to break.
The team is global and built to last. A follow-the-sun structure spanning Los Angeles and Sydney is what you build for sustained, multi-year development, not a prototype.

Read the full posting on Riot's careers board.

Riot's campus. The MMO stays silent in public while its hiring quietly staffs up.

What It All Signals

Put the two postings side by side and a picture sharpens. This is not a team sketching ideas on a whiteboard. It is a team building a game.

What the board adds up to:It confirms the engine. This MMO is being built in Unreal Engine, not a bespoke in-house engine. Riot chose to stand on a shipping, modern toolchain, which is a pragmatic call for a project this size.
It is staffing for content, not just heroes. The posting names players, NPCs, and creatures in the same breath and asks for retargeting that supports "creatures of varying proportions while minimizing animation counts." You only optimize for many creature types when you plan to build many. That is bestiary work, the raw material of a world full of things to fight.
It is built for scale from the animation layer up. The role asks for character systems that "scale effectively across massive multiplayer environments." This is not a vertical slice. It is pipeline work for a populated world.
The team is global and built to last. A follow-the-sun structure spanning Los Angeles and Sydney is what you build for sustained, multi-year development, not a prototype.
It points at a real, growing codebase. You do not hire a manager for automation and build tooling "across a distributed network of servers" unless there is a large, active codebase and a server fleet to keep healthy.
Something is already running. An on-call rotation for live-service issues means internal builds and servers are up around the clock, a milestone you only reach once the thing is playable enough to break.

None of this is a release date, and none of it confirms a single feature. Riot has announced no classes, no zones, and no systems. But there is a real distance between "still concepting" and "actively building," and a board that names Unreal Engine, creature pipelines for massive multiplayer, and a server fleet with a live on-call rotation sits firmly on the building side of that line.

Check it yourself: riotgames.com careers, filtered to MMO.

Your Read

Reader poll

The board says "actively building." Do you buy it?

Sourced directly from Riot's live Greenhouse board on the day of writing. Roles rotate, so the board will look different next month, and that churn is its own signal. No release date is implied or claimed. Analysis by RuneGrove.

Riot's Runeterra MMO Runs on Unreal Engine, 2 New Job Listings Confirm