Mobile-first Web3 for games is now totally doable! Thanks to the latest changes in iOS and Android policies, along with passkey-based smart wallets and specialized gaming stacks for different chains, you can roll out compliant, easy-to-use onchain features without messing up your user acquisition (UA), attribution, or average revenue per daily active user (ARPDAU).

Here’s a handy guide that’s got just the right mix for engine teams and producers alike. It’ll walk you through the steps to port your game to iOS and Android, all while ensuring you nail on-chain ownership, solid performance, and a return on investment that’ll hold up in procurement discussions.

Mobile-First Web3: Porting Your Game to iOS and Android

For CTOs/Heads of Engineering: We're diving into device attestation, Secure Enclave/StrongBox, ERC-4337 session keys, and EIP-1271/6492. Don’t forget about AA paymasters, Keystore attestation, on-device ZK proving, and those handy engine plugins for Unreal/Unity. Oh, and let’s talk privacy budgets too!
For Executive Producers/Live-Ops: Keep an eye on ARPDAU, retention rates after 7 and 30 days (D7/D30), and making sure your LTV:CAC ratio is looking good. We can’t overlook SKAN/AdAttributionKit postbacks, the purchase funnel, price testing under IAP/EPLE, content cadence, and how to monetize with TON Stars.
For UA/Monetization Leads: Important updates are here! Check out the AdAttributionKit re-engagement windows for iOS 17.4+/iOS 18. We also need to keep track of the Topics/Attribution Reporting status on Android, and make sure we compare store fees versus external payments. Plus, with the upcoming Telegram Mini App pre-launch, it’s a good time to explore off-platform monetization and Stripe stablecoin checkout.
For Legal/Compliance/Procurement: Don’t forget the details with Apple 3.1/3.1.1/3.1.5(iii), and look into the U.S. External Purchase Link Entitlement (EPLE) and that 27% fee. We should also stay updated on EU DMA alternative terms, the CTF/CTC roadmap, and Google Play’s new “Blockchain-based content” rules. Lastly, we need to be aware of wallet licensing in certain jurisdictions, along with data processing and sanctions screening. You can check more about it on the Apple Developer Guidelines.

So, your build is sailing through internal QA, but it keeps getting tripped up during the App Store review because of “buttons or external links” leading to NFT purchases, or even worse, unlocking gameplay based on whether players own NFTs. Over on Android, those tokenized cosmetics are being called “loot boxes of unknown value,” which is a total roadblock for your release. To make matters worse, wallet UX is dragging down day‑0 conversion, and it feels like UA teams are hitting a wall trying to match SKAN/AdAttributionKit postbacks with onchain cohorts. (developer.apple.com)
iOS (U.S. storefront): If you're looking to link to external purchase pages, the External Purchase Link Entitlement has got you covered, but just a heads-up: Apple takes a hefty 27% cut on qualifying off-app purchases made within 7 days of the tap. Make sure to include that link on just one page of your app and steer clear of putting it in the IAP flow, or you risk getting rejected. Oh, and don’t forget that the EU has its own fee structure going on with a reduced commission plus some Core Technology fees that roll out through 2026. If you mess up this setup, it could really hurt your P&L and push your launch back by weeks. (macrumors.com)
Android (Google Play): Good news for blockchain games--they're allowed! But there are some rules to follow: you have to declare any tokenized assets, avoid making it sound like players are going to cash in big time, and no selling random NFT bundles with undisclosed value (those loot boxes). Just a note: crypto-mining on devices is a no-go. Ignore these rules? Expect a quick takedown of your app. (android-developers.googleblog.com)
UA and attribution: With AdAttributionKit stepping in, it's replacing and expanding the SKAdNetwork with install and re-engagement postbacks (for iOS 17.4+/18). If you don't tweak your conversion windows and tagging, you're going to undercount ROAS and potentially derail promising campaigns. (developer.apple.com)
Wallet friction is demonstrably expensive: Passkeys have made a big difference, showing way better success rates in user sign-ins compared to traditional passwords. Projections for 2024-2025 suggest that you'll see significant boosts in conversions. If your wallet still requires users to enter seed phrases, you're definitely losing revenue right from the get-go. (theverge.com)

Store Compliance by Design (iOS, Android, Telegram)

iOS

If you're selling digital goods straight up, make sure to sync with guidelines 3.1/3.1.1 and the NFT clause. This means you should allow browsing and viewing of NFTs, avoid any NFT-gated features, and handle NFT purchases via IAP or, if you're in the U.S., through EPLE with that 27% fee. We've got your back on EPLE placement, copy, and accounting to help you breeze through reviews. (developer.apple.com)
If you’re in the EU, keep an eye on Apple’s shifting DMA terms coming up. They're planning to cut commissions, allow alternative payment links, and transition from CTF to CTC between 2025 and 2026. We analyze fee exposure by cohort and can give you the lowdown on whether to opt into those alternative terms for each SKU. (developer.apple.com)

Android (Google Play)

Don’t forget to file the Financial Features declaration, mention any Tokenized Digital Assets in your product metadata, ditch any “unknown-value” NFT sale mechanics, and make sure you’re in line with the Real-Money Gambling policy, if that’s relevant for you. We’ll tighten up your store listings and in-app copy to steer clear of any red flags. (android-developers.googleblog.com)

Telegram (TON Mini Apps)

If you’re gearing up to launch or want to grow in parallel on iOS and Android, check out using Telegram Mini Apps with Stars (which work with IAP) and converting Stars to TON or discounted ads. This not only keeps things compliant but also helps you build an audience that you can retarget in your native apps once you launch. (core.telegram.org)

2) Wallet UX That Actually Converts (No Seed Phrases, No Cliff Edges)

First up, let’s talk about implementing passkey‑first smart accounts (ERC‑4337) with session keys. This way, your gameplay flows can happen without those annoying signature pop-ups. We’ve got your back with WebAuthn validators (EIP‑1271/6492), meaning undeployed accounts can authenticate easily and your backend can verify signatures without relying on those brittle hacks. Check it out here: (blog.thirdweb.com)
Here are some vendor/tooling options we’ve made super reliable for production:
- Coinbase Smart Wallet: Comes with passkeys and supports deep web/mobile. (coinbase.com)
- Web3Auth: This one's all about MPC + AA, offering fast logins at scale. (web3auth.io)
- Thirdweb Unity/Unreal SDKs: Featuring in-app wallets, session keys, AA, and built-ins for EIP‑1271/6492. (github.com)
And when it comes to keeping everything secure on devices:
- For iOS, keys are stored in the Secure Enclave and Keychain, and passkeys sync seamlessly through iCloud Keychain with end-to-end encryption. (developer.apple.com)
- On Android, keys are kept safe in the hardware-backed Keystore/StrongBox where possible, and you can enable attestation to make sure those keys are securely protected. (developer.android.com)

3) Engine Integration Patterns (Unity/Unreal) That Don't Block Your Ship

Unity: Let's get your wallet flows, gas sponsorship, and EVM interactions sorted with the thirdweb Unity SDK (works with Unity 2022+ and Unity 6). We’ve got prefabs and end-to-end samples ready for you, including guest-to-passkey upgrades, gasless mints, and session-key actions. Check it out here.
Unreal: If you're using Unreal, you’ll want to grab the thirdweb Unreal plugin (we’ve got verified releases for UE 5.3 to 5.6). This setup includes Smart Wallet signing (EIP‑1271/6492), ensuring your backend trusts signatures before the account goes live. You can dive in here.
TON/Telegram Integration: For projects where TON/Telegram makes sense, we’re adding a parallel HTML5 flow (Mini App). This way, you can test out your economy sinks and sources before hitting submit for the stores. Once you’ve got some solid SKUs that work, you can move them into native builds down the line. Market trends show that TON/Telegram can create huge funnels (think Notcoin/Hamster Kombat scale), but we’re also planning for a realistic drop in DAU post-peak and aiming for sustainable lifetime value. For more insight, check this out here.

4) Chain and Infra Selection (Optimize for Gameplay, Not Dogma)

Ethereum L2 for Games: The Immutable zkEVM (powered by Polygon) has really come a long way. We're seeing solid single-sequencer stability, it’s EVM equivalent, and it’s got a gaming-specific stack that includes cool features like Passport and gas abstraction. The roadmap for 2025-2026 involves merging Immutable X into zkEVM, creating a one-stop gaming hub with lightning-fast 2-second block times and single-block finality--that’s a sweet setup for live-ops. Check out more about it here.
TON for Social Gaming Funnels: Telegram Mini Apps have leveled up and now run full-screen, complete with all the platform features you’d want. Plus, the Stars feature makes in-app purchases compliant on iOS and Android while helping developers convert to TON and ads--pretty handy for user acquisition flywheels. You can read all about it here.
Solana Mobile (Android) for Crypto-Native Audiences: The Solana Mobile Stack, in collaboration with OEM partnerships, is geared toward making secure signing and distribution a mainstream thing on Android, thanks to their MediaTek pipeline. We see Solana Mobile as more of a growth channel rather than a must-have dependency. For details, check out this link: solanacompass.com.
We only design cross-chain bridges or L3s when there's a clear profit and loss reason to do so. For more info on our cross-chain solutions development and blockchain integration, hit those links!

5) ZK on Mobile: Where It’s Ready--and Where It Isn’t

Good news! On-device proving is finally becoming a reality for certain circuits. Ingonyama’s IMP1 (ICICLE‑SNARK) is showing some impressive results, boasting up to a 3× speed boost over Rapidsnark on mobile devices. We’re talking about proof generation times of around 2.3 seconds for ~1M-constraint ZKML on the iPhone 16. This can be a game changer for anti-cheating measures, private matchmaking features, or even proof-of-play scenarios. For heavier workloads, we’re coupling this with server-GPU proving. Check it out here.
According to independent benchmarking done by FibRace in 2025, client-side proofs clock in at under 5 seconds across a diverse range of devices. While it still depends on the specific circuit, it’s a solid indication that we’re on the right track for more focused in-game ZK tasks. You can read more about it here.
We’re also experimenting with Mopro for Circom circuits and keeping track of some iOS quirks (like those pesky Wasmer issues). If WebGPU compute is a must on iOS, we’re doing some bucket testing on different devices since Safari's support is always evolving. More details can be found here.

6) Payments and Monetization Paths Without Landmines

iOS U.S.: If you're thinking about adding an external purchase link, remember to factor in that 27% commission within 7 days of the tap. Make sure to follow Apple's placement and copy rules to the letter. If that seems tricky, just stick to In-App Purchases (IAP) and design your bundles accordingly. We do A/B testing on price ladders while keeping these guidelines in mind. (macrumors.com)
EU: When it comes to alternative terms versus standard terms, keep in mind that CTF/CTC and “store services” fees can really shake up the landing economics for digital goods through 2026. We recommend using a fee scenario tool before you dive in. (developer.apple.com)
Android: Make sure to keep sales transparent. Avoid RNG NFT sales, and if you’re going to enable tokenized assets, complete the required declarations while steering clear of any “earn hype” language. (android-developers.googleblog.com)
Telegram: You can sell with Stars (which are IAP-compatible) and convert them into TON or ad credits. Good news--Telegram gives a 30% ad discount when you reinvest Stars, which is super handy for user acquisition loops. (core.telegram.org)
Stablecoin Checkout (web): For out-of-app purchases where it's allowed, check out Stripe’s USDC/USDP, which supports Ethereum, Solana, Polygon, and Base at around a 1.5% fee with fiat settlement. We integrate this for web flows that complement your mobile offerings. (docs.stripe.com)

7) UA, Measurement, and Live-Ops Analytics

iOS: We're making the switch to AdAttributionKit for both installs and re-engagement postbacks (this is for iOS 17.4 and up). We connect conversion windows and tags to your on-chain events like mints and upgrades. This way, User Acquisition (UA) can see honest Return on Ad Spend (ROAS) without tracking individual users. Check it out here: (developer.apple.com)
Android: We're still backing legacy attribution while Google keeps updating its privacy framework. Our advice is based on the current state of Topics/Attribution Reporting and how SDK Runtime impacts ad SDKs. Dive into the details here: (developers.google.com)

8) Security Hardening and Audits

Device Keys: For iOS, we rely on the Secure Enclave and Keychain, while Android uses the hardware-backed Keystore and StrongBox along with key attestation. If the OEM hardware is a bit shaky, we make sure to fail closed to software-only keys. Check out more details here.
Protocol/ZK Libraries: We're always keeping an eye on any upstream advisories, like those pesky zkVM constraint bugs, and we make sure to stick to patched versions. Our audits really dig into the 4337 modules, session key scopes, and token permissions. You can see more about vulnerabilities here.
Before we go for a soft launch, we definitely recommend engaging our security audit services. It’s a smart move!

9) Delivery Plan You Can Schedule Around

Phase 0 (1-2 weeks): We'll kick things off with a compliance blueprint for iOS, Android, and Telegram, alongside some fee and attribution modeling, plus selecting the right chain and SDK. By the end of this phase, you’ll have a store-ready monetization map, privacy and consent copy, and a wallet UX spec. Don’t forget to check out our web3 development services for more info!
Phase 1 (3-6 weeks): Next up is engine integration using Unity or Unreal. We’ll be working on a smart-account wallet that includes passkeys and session keys, along with gas abstraction. You’ll see a testnet rollout here, tagging with AdAttributionKit, and a pilot for the Stars Mini App. What you can expect as deliverables? Internal test builds and a Mini App MVP. For more details, take a look at our dApp development.
Phase 2 (3-6 weeks): In the final phase, we’ll focus on productionization. This includes wiring for IAP and EPLE, backend verification, and implementing ZK modules where necessary. We’ll also handle store submissions, create a Telegram user acquisition loop, and set up web checkout. By the end of this phase, you’ll have live builds, UA dashboards, and an L1 security review. If needed, feel free to request smart contract development and blockchain development services.

A) “Cosmetic‑first” hero shooter (Unity, EVM L2)

Smart Wallet + passkeys: We can turn more than 70% of password failures into successful sign-ins! Passkeys are showing some impressive success rates compared to traditional passwords, so for your initial onboarding, plan for a conservative boost of around 20-30%. (theverge.com)
Monetization: We’ll be selling cosmetics through iOS In-App Purchases. Just a heads up, for our U.S. users, we’ll have an external link as a way to handle web bundles while keeping that 27% commission window in mind. For Android, we’re doing in-app purchases with clear tokenized items--no random number generator nonsense here! (macrumors.com)
Live‑ops: We’re using Immutable zkEVM for quick 2-second finality and gas-sponsored crafting. Plus, we’ve got Passport-compatible flows for a seamless “invisible signing” experience. (immutable.com)

B) “Tap-to-collect” social idle (Telegram → iOS/Android)

We’re kicking things off as a Telegram Mini App to test the waters with our meta and economy. We’ll make money through Stars (it’s all IAP-compliant), and then we’ll turn those Stars into ad spend at a sweet 30% discount. The goal is to eventually convert these high-intent users into downloads of our native app. (core.telegram.org)
Just a heads-up: we’re expecting some ups and downs. Those big viral spikes usually even out over time (just look at Hamster Kombat’s initial boom followed by a drop in active users). We’re ready with retention strategies and plans for smooth native migration before the hype dies down. (wired.com)

C) “Fair-match” PvP Puzzler (Unreal, ZK Anti-cheat)

For those rocking an iPhone 16 or any recent Android device, we’re pretty excited to share that we can validate small circuits (like move validity) right on your device in just a few seconds, thanks to IMP1. For more intense cheating cases, we’ve got server-side GPU proving to handle the heavy lifting. This means we can ensure fairness without needing round-trip signatures for every single move. Check out more details on this over at ingonyama.com!

Prove: GTM Metrics You Can Take to the Greenlight

Onboarding: Using passkeys and embedded wallets can really boost completion rates. Public data shows a noticeable jump in successful sign-ins compared to traditional passwords, with industry benchmarks indicating around a 30% increase in conversion rates. So, if you're planning, it’s safe to aim for a conservative range of +15-25%. (theverge.com)
Monetization Mix: The changes to the 27% fee structure on iOS in the U.S. are shaking things up for price ladders. Plus, the EU's DMA rules are making SKU-level modeling a must through 2026. And don’t forget about the restrictions for RNG sales on Android when it comes to NFTs. To help you navigate all this, our fee and policy simulator is here to help you avoid any slip-ups before you submit. (macrumors.com)
Funnel Seeding: Check out Telegram Mini Apps--they're doing wonders at the top of the funnel! We’re utilizing Stars→TON ad loops for some slick retargeting that seamlessly integrates into our native builds. (core.telegram.org)

What 7Block Labs Brings (And How to Get Started)

Policy-proof monetization: We’ve got you covered with design and submission packets that breeze through reviews on the first try.
Seamless Wallet UX: Experience a wallet interface that feels almost invisible, thanks to passkeys, session keys, gas abstraction, and backend-verifiable signatures.
Engine-native SDK integration: Get hassle-free integration with Unity and Unreal, complete with production CI and thorough security checks.
Flexible Payment Architecture: We support IAP, EPLE, Stars, and web stablecoin checkout, all crafted for easy modeling by your CFO.
Smart ZK Implementation: We focus on zero-knowledge (ZK) tech where it really boosts your ROI, like for anti-cheat and privacy, without slowing things down.

Dive into how we get things done:

Check out our web3 development services
Learn about our blockchain development services
Explore our approach to blockchain integration
Discover what we offer with our security audit services
Get the scoop on our smart contract development
Unpack the details of asset tokenization
And don’t miss our dapp development services!

Appendix: Key 2025-2026 Policy and Platform Facts to Anchor Your Plan

iOS NFT Rules: You can mint, list, and transfer NFTs using in-app purchases (IAP). While you can view the NFTs you own, remember that owning them won't unlock any in-app features. In the U.S., the storefront allows external purchase links through EPLE, but Apple still takes a cut, and the link placement is pretty strict. Things are different in the EU under the DMA, with terms and fees that are still evolving through 2026. (developer.apple.com)
Google Play Blockchain Content: If you're working with tokenized assets, you'll need to declare them upfront. No flashy “earning” schemes here, and definitely no selling for a shot at NFTs whose value is up in the air. Oh, and on-device mining is a no-go. (android-developers.googleblog.com)
AdAttributionKit (iOS 17.4+/18): This toolkit offers install and re-engagement postbacks with conversion windows, so make sure your user acquisition (UA) measurement is up to snuff. (developer.apple.com)
Telegram Stars → TON and Ad Discounts: With Telegram, compliant in-app purchase flows will be present in Mini Apps, which means developers can either withdraw to TON or benefit from subsidized ads. (core.telegram.org)
Immutable zkEVM Gaming Stack: This is an EVM-equivalent setup that achieves single-block finality in about 2 seconds. The plan is to merge Immutable X into a unified chain by 2025-2026. (immutable.com)

CTA (personalized)

Got a Unity or Unreal build stuck because of an App Store rejection (like 3.1/3.1.1 for NFTs or U.S. EPLE placement) or a Google Play “blockchain‑based content” flag? We’re here to help! Just send us the following:

The exact messages you got from the reviewer,
A link to your TestFlight or Play Internal Testing,
Your monetization map (a one-pager will do).

We'll get back to you within 5 business days with a red-lined compliance plan, a pricing ladder, a wallet/AA blueprint, and a checklist that's ready for submission. After that, we’ll implement everything from start to finish. Ready to dive in? Check out our blockchain integration services!

Key Money Phrases to Keep in Mind

“Passkeys reduce wallet drop-offs; safeguard your ARPDAU.”
“Design with Apple’s 27% EPLE rule in mind, not just to work around it.”
“Session keys mean gameplay without those annoying signature pop-ups.”
“Telegram Stars spark growth; native apps really maximize LTV.”
“Immutable zkEVM provides the finality your live ops can count on.”