Discovery & Vertical Slice
4–6 weeks · from £18,000
We turn your pitch into a playable vertical slice: core loop, art direction test, and a technical plan. You leave with a build you can put in front of publishers and players.
Game Development · Shoreditch, London
We build worlds worth getting lost in.
QuantumLegendVault is an independent studio crafting original titles, co-development, and live-ops for PC, console, and mobile — from a converted press hall on Rivington Street.
- 11
- Shipped titles
- 4.7M
- Players reached
- 2016
- Est. in London
The Studio
A small crew with a jazz-club sensibility for games.
We are eighteen designers, engineers, and artists working out of a single warm-lit room off Rivington Street. We take on a handful of projects each year so every title gets the improvisation, tuning, and late-night playtests it deserves.
From vertical-slice prototypes to full production and post-launch seasons, we own the craft end to end — narrative systems, gameplay feel, tools, and the analytics that keep a live game healthy long after launch.
- Unreal Engine 5 & Unity specialists in-house
- Steam, PlayStation, Xbox & mobile shipping experience
- Playtest lab open every Thursday evening
How We Work
Four movements, from riff to release.
Every engagement follows the same rhythm — transparent milestones, fixed weekly cadence, and pricing you can plan around.
Pre-Production Design
6–10 weeks · from £32,000
Systems design, narrative bible, and a production roadmap. We lock scope, staff the team, and stand up the tooling pipeline before a line of shipping code is written.
Full Production & Co-Dev
3–12 months · from £24,000 / month
Our team embeds with yours to build the game — gameplay, content, optimisation, and certification for PC and console. Weekly builds, open Jira, and a shared Discord.
Live-Ops & Seasons
Ongoing · from £9,500 / month
Post-launch we run the seasons: telemetry dashboards, balance patches, event content, and player-support tooling that keeps retention curves flat instead of falling.
The Crew
The people behind the vault.
A senior team that has shipped across indie darlings and AAA co-productions.
Creative Director
Mara Ellison
Fifteen years across narrative-driven RPGs. Leads world-building and the studio’s Thursday playtest ritual.
Technical Director
Devon Achebe
Unreal 5 gameplay engineer, ex-console platform team. Owns performance, tooling, and the build pipeline.
Art Director
Yuki Tanaka
Concept-to-shader art lead. Sets the smoky, hand-painted look our titles are known for.
Head of Live-Ops
Priya Raman
Turns telemetry into seasons. Ran live services for a 2M-DAU mobile strategy game before joining us.
Voices
What partners say after the credits roll.
They took our rough co-op prototype and shipped a Steam title that hit “Very Positive” in its first week. The vertical slice alone got us funded.
The live-ops team flattened our week-four churn by 22%. Their telemetry dashboards are now how our whole publishing team reads the game.
Embedding their engineers with ours doubled our build velocity. Weekly builds, no drama, and certification passed first try on both consoles.
Genuinely the best playtest culture I have seen. Every Thursday we learned something that changed the game for the better.
They took our rough co-op prototype and shipped a Steam title that hit “Very Positive” in its first week. The vertical slice alone got us funded.
The live-ops team flattened our week-four churn by 22%. Their telemetry dashboards are now how our whole publishing team reads the game.
Embedding their engineers with ours doubled our build velocity. Weekly builds, no drama, and certification passed first try on both consoles.
Genuinely the best playtest culture I have seen. Every Thursday we learned something that changed the game for the better.
Studio Dispatch
Devlogs, playtest invites, and release notes.
One considered email a month — behind-the-scenes devlogs, open playtest invitations, and the occasional Steam key. No spam, unsubscribe anytime.
We send at most once a month and never share your address.
Start a Project
Tell us about your game.
Whether you have a napkin sketch or a green-lit production, we reply to every serious enquiry within two working days.
Call the studio
+44 20 7729 3039Visit us
52B Rivington Street, Shoreditch, London EC2A 3QN
Studio hours
Mon–Fri, 10:00–18:00 · Playtest night Thu until 21:00