A studio picks a co-dev partner based on an impressive reel. The reel is real. The credits are real. But three months into expansion production, the integration is a disaster: branching conflicts, missed regression catches, and a handover process nobody agreed on. The expansion slips. The relationship sours. And the original studio is left wondering how it got this far before the warning signs became obvious.
Following best practices for selecting a co-development studio for game expansions would have caught every one of those problems before the contract was signed. Choosing a co-development partner for an expansion is a fundamentally different evaluation than hiring for a new IP. You are handing someone access to a live codebase with existing players, existing save states, and a platform certification history already in the field. The stakes for a bad fit are immediate. Kokku has shipped DLC and live-service co-dev work alongside partners like Electronic Arts, Activision and Guerrilla Games, and the benchmark is consistent: a qualified external development studio has receipts, not just a reel. Here is how to find one.
Dig into the portfolio beyond shipped titles
A co-dev studio that lists a AAA title in its credits may have produced three prop assets or shipped an entire combat system. The credit alone tells you nothing. Ask for specific feature credits: which team leads were involved, what engine version they ran, and how their work integrated into the primary build. Vague attribution is a warning sign worth taking seriously when vetting a game development studio.
Building an expansion is different from building a standalone game. You need a partner with documented experience in save compatibility, DLC packaging, platform certification for expansion content, and integration into a live codebase. Ask whether they have shipped paid DLC or supported a live-service title. Ask for outcomes, not just delivery confirmation. There is a real difference between “we delivered assets” and “we passed first-attempt certification on all platforms.”
Best practices for selecting a co-development studio: technical integration
Branching strategy and pipeline compatibility
Confirm engine, platform, and pipeline compatibility before anything else. A studio that has never worked in your engine version, never certified content on your target platform, or never operated inside an external team’s build pipeline is a liability on an expansion project. These are not capabilities you can train on your timeline.
CI and gated integration
Integration failures on co-dev projects rarely come from skill gaps. They come from branching chaos and no shared definition of done. Walk the studio through a specific scenario: how do they manage merge windows with a primary team when two feature branches conflict? If they cannot answer clearly, integration risk is high. Strong co-dev partners for AAA work typically operate on controlled streams with gated integration and CI-triggered validation, not open branch access and manual spot-checks.
Merge windows and handover definitions
Before any code is written, establish what “ready to merge” actually means for your project. Confirm the studio’s code review process and build validation practices in writing. Shared definitions of done are not bureaucratic overhead, they are the difference between a clean handover and three weeks of rework.
Communication and scalability are not soft factors
Time zone misalignment kills co-dev momentum faster than almost any technical issue. Confirm overlapping hours, sync cadence, and the escalation path when a decision is blocked. Studios with no documented escalation process let problems compound silently, which is exactly what you cannot afford mid-production on an expansion with a locked release window.
An expansion project rarely runs a flat resource curve. You need a partner that can add engineers for a systems sprint or bring in extra art capacity for a content push without reshuffling the core team on your project. Pin them down on specifics: what is their bench depth by discipline, and what is their staffing continuity plan for key leads? A vague answer here is itself an answer.
Expansion QA means protecting the base game, not just validating new content
New content that breaks existing save states, disrupts base-game systems, or fails platform regression testing will delay your launch regardless of how polished the new features look. In practice, the most common QA failures in co-developed expansions happen at the seams between teams, not inside the new content itself. Find out how the studio handles regression testing against the base build, what their defect triage process looks like, and whether they use any test automation for compatibility checks.
Set clear acceptance criteria and handoff expectations before work begins. What does “done” look like? Who signs off on each deliverable? What is the cure period if something fails review? An undefined handover is one of the most underrated risks in expansion co-dev. Document it up front, and confirm the studio is comfortable operating against those terms.
Co-dev contract and IP clauses: lock in ownership, milestones, and the right payment model
A co-development agreement for an expansion must define background IP (what each party brings in) and foreground IP (what gets created) with zero ambiguity. All source files, assets, and code should have a clear ownership path. Include acceptance criteria in the deliverables clause, specify review and rejection timelines, and address subcontracting restrictions and repo access controls. These clauses are not negotiating leverage; they are baseline protection.
Match the payment model to how defined your scope actually is. For well-scoped expansion work with locked features, a milestone-based fixed price gives budget certainty and progress accountability. For expansions with evolving requirements or discovery-phase work, a time-and-materials arrangement with a cap protects both sides. Avoid pure revenue share for expansion co-development unless both parties have clear, auditable revenue definitions and shared governance.
The decision is a structured evaluation, not a gut check
Applying best practices for selecting a co-development studio for game expansions means asking harder questions earlier, before a contract is signed and the integration clock is running. The studios that hold up under that scrutiny share the same traits: specific expansion credits with real attribution, a disciplined approach to technical integration and QA, genuine communication infrastructure, and contract terms that protect both parties from the start. That combination is less common than most publishers expect.
Kokku is built for exactly this kind of co-development partnership. If your expansion project is coming up and you want to pressure-test the fit before committing, reach out to our team to walk through what it actually needs.