When indie studio founders hear "PCI-DSS compliance," the usual response is some combination of panic and avoidance. PCI-DSS — the Payment Card Industry Data Security Standard — is a mandatory compliance framework for any entity that stores, processes, or transmits cardholder data. The perceived complexity leads many small studios to either ignore it entirely (which creates real liability) or assume that because they process payments through a store, it doesn't apply to them (which may or may not be correct, depending on how your payments are set up).
The more accurate picture is this: your PCI compliance scope depends entirely on how your payment flow is architected. A well-structured payment integration can significantly reduce your scope. A poorly structured one can expose you to the full weight of a Level 1 SAQ-D self-assessment. This piece explains the scope question, what the different SAQ levels mean for small studios, and the practical steps available to get your scope down to something manageable without a dedicated security team.
What PCI-DSS Actually Governs
PCI-DSS governs cardholder data — specifically, primary account numbers (PANs), expiration dates, CVVs, and cardholder names when associated with a PAN. The standard is maintained by the PCI Security Standards Council (PCI SSC) and is contractually required by the major card networks (Visa, Mastercard, Amex, Discover) for any entity that accepts their cards. It's not a government regulation, but violating it puts you in breach of your merchant agreement with your acquiring bank, which is a practical enforcement mechanism that has teeth.
The key scope question is: does your system ever see raw cardholder data? If you process payments through Apple's App Store or Google Play, the answer is no — the platform handles the payment entirely, cardholder data never touches your servers, and your PCI exposure from those transactions is effectively zero. The app store is a Level 1 Service Provider taking on that scope.
The scope question gets more complex when:
- You run a web shop outside the app store and use a self-hosted payment form
- You've integrated a payment SDK directly in your game client rather than redirecting to a hosted page
- You store any subscription billing data server-side
- Your game backend ever receives or logs raw card numbers, even accidentally in request logs
SAQ Levels: Which One Applies to You
The PCI-DSS Self-Assessment Questionnaire (SAQ) comes in multiple flavors based on how you handle cardholder data. For small studios, the relevant SAQs are:
SAQ A is the lightest scope — applicable to card-not-present merchants who have fully outsourced all payment processing to PCI-compliant third parties and have no cardholder data on any of their systems. If your only payment method is through app store billing, or if your web shop uses a hosted payment page from a compliant PSP where the payment form is served from the PSP's domain, you likely qualify for SAQ A. It's 22 questions and represents a manageable compliance overhead for a small studio.
SAQ A-EP applies when you use a third-party payment page but your website indirectly receives or processes cardholder data — for example, if the payment form is on your site via an iframe but your page executes scripts that could access cardholder fields. E-commerce web shops that use JavaScript-based payment widgets frequently land in SAQ A-EP rather than SAQ A.
SAQ D is the full assessment — all 331 requirements. This applies to merchants who store, process, or transmit cardholder data in their own environment. If your game client ever directly handles payment card data, not routing it through a compliant hosted solution, you are in SAQ D territory. This requires network segmentation, penetration testing, log monitoring, encryption key management, and a level of security engineering that is genuinely hard for a small studio to maintain.
We're not saying SAQ D compliance is impossible for small studios — but the effort to maintain it continuously, not just at initial assessment, is substantial. The better path for most indie studios is to architect their payment integration to qualify for SAQ A from the start.
How to Reduce Your Scope: The Architecture Choices That Matter
Scope reduction in PCI is primarily an architectural question, not a security controls question. You reduce scope by removing cardholder data from systems you control, not by adding controls to systems that see cardholder data.
The most effective scope-reduction strategies for game studios:
Use hosted payment pages for web shop checkout. Rather than embedding a payment form directly on your site, redirect to your payment processor's hosted payment page or embed their certified hosted fields via iframe. When implemented correctly, the cardholder enters their card number directly into the PSP's secure field, which is never transmitted to or through your web server. You receive a token representing the card, not the card data itself.
Never log HTTP request bodies on routes that receive payment data. This is a common source of unintentional cardholder data capture. If a misconfigured request occasionally includes a raw card number in a body parameter and your application logs all request bodies — a common debug configuration — you've inadvertently stored PAN data in your application logs. Application-level log filtering that strips fields matching PAN patterns is mandatory if there's any payment-adjacent route in your request logging scope.
Tokenize before any server-side processing. If your payment integration requires any server-side touch — for subscription management, receipt validation, or applying promotional codes — ensure you're working with a payment processor token, not raw card data. The token is a reference to the underlying card; it's useless outside the processor's system. Your server stores tokens, not PANs.
A Practical Scenario: The Indie Studio Web Shop
An indie studio with a PC GaaS title in early access — around 12,000 MAU, primarily European and North American players — decides to launch a direct web shop to sell premium currency outside Steam. They initially build the checkout using a simple payment form that posts card data to their own backend, which then calls a payment processor API.
This architecture puts them in SAQ D. Their backend is receiving raw cardholder data — the POST request contains the card number. Maintaining SAQ D compliance with a team of four developers is a significant ongoing burden.
The fix is a one-day refactor: replace the self-hosted payment form with their PSP's hosted checkout page or an embedded hosted-fields component, keeping card data in the processor's scope. The studio's server now receives only a payment confirmation token — never a card number. Their scope drops to SAQ A-EP at most, potentially SAQ A with the fully redirected checkout flow.
The same principle applies to in-game web views on mobile: if your game opens a payment screen inside a WebView component that you control, and that view directly handles card data, you've extended your PCI scope into your game client. The solution is to use the platform's native payment sheet — StoreKit on iOS, Google Play Billing on Android — or redirect the payment page to a URL served by your PSP's domain.
When You Use a Gaming Payment Platform
When your studio processes payments through a compliant gaming payment platform rather than building your own integration, the platform holds the PCI scope for the payment processing function. Your obligation is to verify that your payment partner is either a PCI-DSS Level 1 certified Service Provider — listed on the card networks' directory of compliant providers — or has a current Attestation of Compliance (AOC) available. Asking for the AOC is standard due diligence. Any compliant processor will provide one.
Your residual obligation is to not re-introduce cardholder data into your own environment. If your payment platform sends you a tokenized representation of the payment method and your system only stores that token, your scope remains reduced. The error pattern that brings scope back is when studios start caching or logging payment data "for debugging" and inadvertently bring raw card data back into their environment.
Annual Assessment and the Ongoing Reality
PCI-DSS compliance is not a one-time activity. SAQ submission is annual, and the standard's requirement 6 (secure software development) applies continuously — every code change to your payment-adjacent systems should go through a review that considers PCI scope implications.
For studios at SAQ A or A-EP level, the annual effort is manageable: review your payment integration architecture against the SAQ questions, verify that your PSP relationships are still covered by current AOCs, confirm your web shop is still using the hosted payment approach, and check that your log filtering is still in place after any infrastructure changes. This is a few days of work per year, not a continuous security engineering program.
The moment your architecture changes — a new payment flow, a new payout feature, a migration to a new processor — that's the trigger for a scope review. The cost of getting it wrong is not just the potential for a PCI audit and associated fines. It's the liability exposure from a cardholder data breach, which includes notification costs, card reissuance costs charged back to you by card networks, and reputational damage to your studio that is difficult to quantify but real.
PCI compliance for indie studios comes down to one architectural discipline: keep cardholder data off your servers. That discipline, maintained from the first payment integration, keeps you at SAQ A and lets your engineering team focus on building the game rather than managing a security controls program.