ModCo Studios
The first UGC-powered game development production house
We build modding tools, community-driven content, DLC and full games — backed by a network of 100+ vetted modders and a community of nearly 500,000 creators.
UGC Powered
Modding Experts
ModCo Studios was founded by pioneers of the Sims modding scene who helped build some of the earliest tools that shaped the community over 20 years ago. Today, we're a UGC-powered game studio backed by a network of 100+ vetted, studio-quality modders and a broader community of nearly 500,000 creators.
We develop for order mods, original games, DLC-scale content, and bespoke modding tools for studios looking to create dynamic, community-driven experiences. Our work spans platforms and titles including Meta Horizon, The Sims, and Baldur's Gate 3.
100+
Vetted, studio-quality modders
~500,000
Creators in our broader community
20+ yrs
Pioneering the modding scene
Studio Services
ModCo Studios specializes in empowering your game by unlocking modding tools, building your first mods to activate your community, and lengthening your game's long-tail revenue.
Mod Support
- Mod Audits
- Mod Development
- Modding Tutorialization
Tool Development
- Unlocking Modding
- Bespoke Modding Tools
Traditional Dev
- DLC and Game Expansions
- Custom Animations
- Full Game Development
Mod Audits
Consultation & Tutorialization
Increase the number of mods created by your community
- Evaluate your game's current mod accessibility, tooling, workflow and friction points
- Identify the fastest path to a sustainable creator ecosystem
- Recommendations for APIs, hooks, pipelines, packaging, documentation, and creator onboarding
- Tutorials and onboarding flows that reduce support burden on your internal team
- Designed for studios that want community-driven live-ops without a huge internal modding department
Mod Development
Full-Service Mod Creation
Activate your community by showing what's possible
- Full-service mod creation for your game or community
- Gameplay systems, cosmetics, factions, maps, quests, UI, balancing, multiplayer features, and more
- Embedded modders who already understand live communities and moddable ecosystems
- Rapid iteration with community-first development workflows
- Can function as overflow support for live-service teams
Tool Development
Bespoke Mod Tooling & Hookup
Unlock new modders with user-friendly bespoke tools
- Custom APIs, hooks, editors, pipelines, importers, and creator tooling
- Steam Workshop, mod.io, or custom integration support
- Reduce technical friction for creators and accelerate content creation
- Build scalable foundations for long-tail community content
- Consulting on moddability architecture during development or post-launch
DLC & Post-Launch Monetization
Long-Tail Revenue Content
Unlock up to 30% more long-tail revenue for games
- Cosmetic packs, expansions, live-ops content, seasonal content, and creator-driven DLC
- Sustain game engagement without massively expanding internal teams
- Community-informed content packs that align with existing player needs and wants
- Fast-turnaround content production for live games
- Flexible support ranging from one-off DLC to ongoing live content partnerships
Traditional Dev
Traditional Game Development
Build full games for UGC ecosystems or from scratch
- Co-development support for gameplay, systems, content, UI, multiplayer, and production
- Experienced interdisciplinary developers from real modding and live-game ecosystems
- Flexible engagement models from prototyping to full game production
- Especially effective for community-heavy or UGC-adjacent games
- Teams experienced in rapid iteration and player feedback cycles
Custom Animations
In-Game & Marketing Animation
In-game or marketing animation pipeline
- Custom character animations, emotes, interactions, creatures, weapons, and gameplay cinematics
- Animation support for mods, DLC, cosmetics, UGC ecosystems, and live games
- In game, animation engine, or full AI animation experience
- Stylized or realistic pipelines depending on project needs
- Rapid production support for seasonal/live content updates
Studio Process
Our typical studio partnerships follow a three-step process to take your game from modless to UGC empowered.
Research & Planning
ModCo performs a thorough audit of your game, its current tools and your community before delivering findings and action items in a comprehensive report.
Community Empowerment
ModCo creates bespoke modding & UGC tools, thorough tutorialization and your first mods to activate your community and get the UGC engine rolling.
Long-Tail Monetization
ModCo becomes a partner studio extending the lifespan of your game via continued modding & UGC support, as well as DLC, IGP and additional IP extensions.
Selected Work
A sample of the mods, DLC and games we've shipped with and for our partners.
The Sims 4 — Daily Creator Content
Collections of the day: daily cosmetics, furniture, and non-static gameplay mods like our axe-throwing addition.
Prison Life — Sims 4 Episodic DLC
A full expansion-sized pack: custom characters, an evolving storyline, sims scheduling and money-earning gameplay, and a full custom lot.
Baldur's Gate 3 — A Taste of a Certain Court
A bespoke questline featuring Strahd and the legendary Sunsword, with custom gameplay, models, an evolving weapon, and full voice acting.
Void Crew × HutliHut
Modding consultants and developers for HutliHut's Void Crew — identifying strengths and weaknesses of their modding support, then building Faction Identity cosmetic packs.
FashioniStar — Meta Horizon Worlds
A Dress to Impress-inspired game with asymmetrical multiplayer, built for Meta's Partner Program. Shipped on time and landed in the platform's top 25% of Worlds.
Core Team
Willem Delventhal
Design Director & Head of ModCo Studios
- 10+ years in game dev across Unity, Unreal & more
- Credits with Paradox Interactive, IMVU, Lumosity, and Meta
- Taught 10,000+ developers how to make games
Kris Wedemeier
Senior Technical Artist
- 15+ years in UGC and 3D asset/scene creation
- Experience with Unreal, Unity, Blender, Maya and more
Mikael Sundberg
Co-founder & CTO
- 25+ years creating mobile & web apps and leading tech teams
- Was the developer that unlocked modding for the Sims community
Sarah Nelson
Lead Sims Engineer
- 4+ years developing comprehensive gameplay mods for The Sims 4
- Handcrafted animations and custom rigs
- Gameplay systems implemented with Python scripts
Marcus Ulvne
CEO
- 12+ years in digital and interactive media
- Formerly indie entrepreneur, co-founder of Singapore-based Manifold
- Producer / product owner experience
Thomas Isaksson
Co-founder & Chief Design Officer
- 30+ years in graphics design
- 25+ years as an entrepreneur focused on the gaming space
- Founder of The Sims Resource — $20M+ exit
Extended Team
At our core, we are a UGC-powered studio backed by a network of over 100 vetted, studio-quality modders and a broader creator community of nearly 500,000 strong.
Get in Touch
Tell us about your game and community — we'll follow up from there.
Modco LLC
217 East 49th St.
NY 10017 New York