Mobile-first Web3 for games is now practical: recent iOS/Android policy changes, passkey-based smart wallets, and chain-specific gaming stacks let you ship compliant, low-friction onchain features without wrecking UA, attribution, or ARPDAU.

Below is a pragmatic playbook—technical enough for engine teams, concrete enough for producers—to port your game to iOS and Android with onchain ownership, performance, and ROI you can defend in procurement.

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

Target audience and keywords

For CTOs/Heads of Engineering: device attestation, Secure Enclave/StrongBox, ERC‑4337 session keys, EIP‑1271/6492, AA paymasters, Keystore attestation, on‑device ZK proving, engine plugins (Unreal/Unity), privacy budgets.
For Executive Producers/Live‑Ops: ARPDAU, D7/D30 retention, LTV:CAC, SKAN/AdAttributionKit postbacks, purchase funnel, price testing under IAP/EPLE, content cadence, TON Stars monetization.
For UA/Monetization Leads: AdAttributionKit re‑engagement windows on iOS 17.4+/iOS 18, Topics/Attribution Reporting status on Android, store fees vs. external payments, Telegram Mini App pre‑launch, off‑platform monetization, Stripe stablecoin checkout.
For Legal/Compliance/Procurement: Apple 3.1/3.1.1/3.1.5(iii), U.S. External Purchase Link Entitlement (EPLE) and 27% fee, EU DMA alternative terms/CTF/CTC roadmap, Google Play “Blockchain‑based content” rules, wallet licensing in certain jurisdictions, data processing and sanctions screening. (developer.apple.com)

Hook: the specific headache you’re likely facing

Your build passes internal QA but keeps failing App Store review for “buttons or external links” to NFT purchases—or worse, for unlocking gameplay based on NFT ownership. On Android, your tokenized cosmetics are flagged as “loot boxes of unknown value,” blocking release. Meanwhile, wallet UX tanks day‑0 conversion, and UA teams can’t reconcile SKAN/AdAttributionKit postbacks with onchain cohorts. (developer.apple.com)

Agitate: why this costs you deadlines and margin

iOS (U.S. storefront): you may link to external purchase pages via the External Purchase Link Entitlement, but Apple still charges a 27% commission for qualifying off‑app purchases within 7 days of the tap. Place the link in one app page only, not in the IAP flow, or you’ll be rejected. EU adds a different fee model (reduced commission + Core Technology Fee/Commission migrations through 2026). The wrong setup will blow up P&L and delay launch weeks. (macrumors.com)
Android (Google Play): blockchain games are allowed—but you must declare tokenized assets, can’t glamorize earnings, and can’t sell randomized NFT bundles of undisclosed value (loot boxes). Crypto‑mining on device is banned. Ignore this and expect fast takedowns. (android-developers.googleblog.com)
UA and attribution: AdAttributionKit replaces/expands SKAdNetwork with install and re‑engagement postbacks (iOS 17.4+/18). If you don’t refactor conversion windows and tagging, you’ll undercount ROAS and kill promising campaigns. (developer.apple.com)
Wallet friction is demonstrably expensive: passkeys have shown major improvements in successful sign‑ins versus passwords; benchmarks in 2024–2025 indicate material conversion lifts. If your wallet still asks users for seed phrases, you’re leaking revenue at the top of the funnel. (theverge.com)

Solve: 7Block Labs’ mobile Web3 methodology (end‑to‑end, production‑ready)

Store‑compliance by design (iOS, Android, Telegram)

iOS
- If you monetize digital goods directly: align with 3.1/3.1.1 and the NFT clause (allow browsing/viewing; no NFT‑gated features; NFT purchases via IAP or, in the U.S. only, via EPLE with the 27% fee). We implement the EPLE placement, copy, and accounting to pass review on first try. (developer.apple.com)
- EU: plan for Apple’s evolving DMA terms: reduced commissions, alternative payment linking, and transitions from CTF to CTC throughout 2025–2026. We model fee exposure by cohort and advise whether to opt into alternative terms per SKU. (developer.apple.com)
Android (Google Play)
- File the Financial Features declaration, disclose Tokenized Digital Assets in product metadata, remove any “unknown‑value” NFT sale mechanics, and align with Real‑Money Gambling policy if applicable. We harden store listings and in‑app copy to avoid flags. (android-developers.googleblog.com)
Telegram (TON Mini Apps)
- For pre‑launch or parallel growth on iOS/Android: leverage Telegram Mini Apps with Stars (IAP‑compatible) and developer conversion of Stars to TON or discounted ads. This creates a compliant onramp and audience you can retarget in your native apps post‑launch. (core.telegram.org)

Wallet UX that actually converts (no seed phrases, no cliff edges)

Implement passkey‑first smart accounts (ERC‑4337) with session keys so gameplay flows don’t require signature pop‑ups. We support WebAuthn validators (EIP‑1271/6492) so undeployed accounts can authenticate and your backend can verify signatures without brittle hacks. (blog.thirdweb.com)
Vendor/tooling options we’ve production‑hardened:
- Coinbase Smart Wallet (passkeys; deep web/mobile support). (coinbase.com)
- Web3Auth (MPC + AA; fast logins at scale). (web3auth.io)
- Thirdweb Unity/Unreal SDKs (in‑app wallets, session keys, AA, EIP‑1271/6492 built‑ins). (github.com)
Security posture on device:
- iOS keys in Secure Enclave + Keychain; passkeys synced via iCloud Keychain with E2E encryption. (developer.apple.com)
- Android keys in hardware‑backed Keystore/StrongBox where available; enable attestation to verify keys are hardware‑protected. (developer.android.com)

Engine integration patterns (Unity/Unreal) that don’t block ship

Unity: integrate AA wallet flows, gas sponsorship, and EVM interactions with thirdweb Unity SDK (Unity 2022+/Unity 6). We provide prefabs and E2E samples (guest-to‑passkey upgrade, gasless mints, session‑key actions). (portal.thirdweb.com)
Unreal: use thirdweb Unreal plugin (verified releases for UE 5.3–5.6). We wire in Smart Wallet signing (EIP‑1271/6492) so your backend trusts signatures before the account is deployed. (portal.thirdweb.com)
Where TON/Telegram is strategic, we add a parallel HTML5 flow (Mini App) so you can test economy sinks/sources pre‑submission to stores, then move proven SKUs into native builds later. Market data shows TON/Telegram can seed massive funnels (e.g., Notcoin/Hamster Kombat scale), but we plan for post‑peak DAU normalization and sustainable LTV. (wired.com)

Chain and infra selection (optimize for gameplay, not dogma)

Ethereum L2 for games: Immutable zkEVM (Polygon‑powered) has matured materially—single‑sequencer stability, EVM equivalence, and a gaming‑specific stack (Passport, gas abstraction). The 2025–2026 roadmap merges Immutable X into zkEVM for a single gaming home with 2‑second block times and single‑block finality—good fit for live‑ops cadence. (immutable.com)
TON for social gaming funnels: Telegram Mini Apps now run full‑screen with platform features; Stars enable compliant IAP on iOS/Android with developer conversion to TON/ads, useful for UA flywheels. (theverge.com)
Solana Mobile (Android) for crypto‑native audiences: the Solana Mobile Stack and OEM partnerships aim to push secure signing and distribution into mainstream Android (MediaTek pipeline). We treat Solana Mobile as an optional growth channel, not a dependency. (solanacompass.com)
We design cross‑chain bridges or L3s only when there’s a clear P&L reason. See our cross‑chain solutions development and blockchain integration.

ZK on mobile: where it’s ready—and where it isn’t

On‑device proving is finally practical for specific circuits. Ingonyama’s IMP1 (ICICLE‑SNARK) reports up to 3× speedups over Rapidsnark on mobile with ~2.3s proofs for ~1M‑constraint ZKML on iPhone 16—useful for anti‑cheat, private matchmaking attributes, or proof‑of‑play. We combine this with server‑GPU proving for heavier workloads. (ingonyama.com)
Independent benchmarking (FibRace, 2025) observed sub‑5s client‑side proofs across a wide device set—still circuit‑dependent, but a strong signal for narrow in‑game ZK tasks. (arxiv.org)
We prototype with Mopro for Circom circuits and document iOS caveats (e.g., Wasmer issues). If WebGPU compute on iOS is needed, we bucket‑test per device due to evolving Safari support. (zkmopro.org)

Payments and monetization paths without landmines

iOS U.S.: if you add an external purchase link, budget the 27% commission within 7 days of tap and follow Apple’s placement and copy rules precisely. Otherwise, stick to IAP and design bundles accordingly. We A/B test price ladders within those constraints. (macrumors.com)
EU: model alternative terms vs. standard terms; CTF/CTC and “store services” fees materially change landing economics for digital goods through 2026. We run a fee scenario tool before you commit. (developer.apple.com)
Android: keep sales transparent; no RNG NFT sales; if you enable tokenized assets, complete the declarations and avoid “earn hype” language. (android-developers.googleblog.com)
Telegram: sell with Stars (IAP‑compatible) and convert to TON or ad credits (Telegram applies a 30% ad discount when you reinvest Stars—useful for UA loops). (core.telegram.org)
Stablecoin checkout (web): for out‑of‑app purchases where allowed, Stripe’s USDC/USDP supports Ethereum, Solana, Polygon, Base at ~1.5% fee—with fiat settlement. We integrate this for web flows complementary to mobile. (docs.stripe.com)

UA, measurement, and live‑ops analytics

iOS: migrate to AdAttributionKit (install + re‑engagement postbacks; iOS 17.4+/18). We map conversion windows and tags to your onchain events (mints, upgrades) so UA sees truthful ROAS without user‑level tracking. (developer.apple.com)
Android: we continue to support legacy attribution while Google iterates its privacy stack; our guidance reflects the live status of Topics/Attribution Reporting and SDK Runtime implications for ad SDKs. (developers.google.com)

Security hardening and audits

Device keys: Secure Enclave/Keychain on iOS; hardware‑backed Keystore/StrongBox + key attestation on Android. We verify security levels and fail closed to software‑only keys if OEM hardware is unstable. (developer.android.com)
Protocol/ZK libs: we track upstream advisories (e.g., zkVM constraint bugs) and lock to patched versions. Our audits focus on 4337 modules, session‑key scopes, and token permissions. (nvd.nist.gov)
Engage our security audit services before soft launch.

Delivery plan you can schedule around

Phase 0 (1–2 weeks): Compliance blueprint (iOS/Android/Telegram), fee/attribution modeling, chain/SDK selection. Deliverables: store‑ready monetization map, privacy/consent copy, wallet UX spec. Consider our web3 development services.
Phase 1 (3–6 weeks): Engine integration (Unity/Unreal), smart‑account wallet with passkeys + session keys, gas abstraction, testnet rollout, AdAttributionKit tagging, Stars Mini App pilot. Deliverables: internal test builds + Mini App MVP. See dApp development.
Phase 2 (3–6 weeks): Productionization (IAP/EPLE wiring, backend verification, ZK modules where required), store submission, Telegram UA loop, web checkout. Deliverables: live builds, UA dashboards, L1 security review. Add smart contract development and blockchain development services as needed.

Practical examples (what we actually build)

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

Smart Wallet + passkeys: convert >70% of password failures into successful sign‑ins; we’ve seen passkey benchmarks indicate strong success‑rate gains vs. passwords (plan your uplift conservatively at +20–30% for day‑0 onboarding). (theverge.com)
Monetization: sell cosmetics via iOS IAP; U.S. external link as a pressure‑valve for web bundles (respect 27% commission window); Android in‑app purchases with transparent tokenized items (no RNG). (macrumors.com)
Live‑ops: Immutable zkEVM for 2s finality and gas‑sponsored crafting; Passport‑compatible flows for “invisible signing.” (immutable.com)

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

Launch as a Telegram Mini App to validate meta and economy; monetize with Stars (IAP‑compliant), then recycle Stars into ad spend at a 30% discount; convert high‑intent users into native app installs later. (core.telegram.org)
Expect volatility—large viral spikes normalize (e.g., Hamster Kombat’s scale and later active‑user decline). We plan retention sinks and native migration before peak fades. (wired.com)

C) “Fair‑match” PvP puzzler (Unreal, ZK anti‑cheat)

On iPhone 16/modern Androids, we can prove small circuits (e.g., move validity) on‑device in sub‑seconds to seconds using IMP1, with server‑side GPU proving for heavier fraud cases. This yields verifiable fairness without round‑trip signatures for every move. (ingonyama.com)

Prove: GTM metrics you can take to the greenlight

Onboarding: passkeys and embedded wallets routinely improve completion; public data shows strong gains in successful sign‑ins vs. passwords, and industry indices report ≈30% conversion lifts—use +15–25% as a conservative planning range. (theverge.com)
Monetization mix: iOS U.S. EPLE’s 27% fee changes price ladders; EU DMA terms require SKU‑level modeling through 2026; Android NFT rules constrain RNG sales. Our fee + policy simulator prevents unforced errors pre‑submit. (macrumors.com)
Funnel seeding: Telegram Mini Apps demonstrate outsized top‑of‑funnel; we use Stars→TON ad loops for efficient retargeting into native builds. (core.telegram.org)

What 7Block Labs brings (and where to start)

Policy‑proof monetization design and submission packets that pass review the first time.
Wallet UX that “feels invisible”: passkeys, session keys, gas abstraction, and backend‑verifiable signatures.
Engine‑native SDK integration (Unity/Unreal) with production CI and a security review.
Payment architecture across IAP, EPLE, Stars, and web stablecoin checkout that your CFO can model.
ZK where it adds ROI (anti‑cheat/privacy), not where it adds latency.

Explore how we execute:

Appendix: key 2025–2026 policy and platform facts to anchor your plan

iOS NFT rules: mint/list/transfer via IAP; viewing owned NFTs allowed; ownership cannot unlock in‑app features. U.S. storefront permits external purchase links via EPLE but Apple still collects a commission; link placement is tightly controlled. EU terms/fees are distinct under DMA and are evolving through 2026. (developer.apple.com)
Google Play blockchain content: declare tokenized assets; no glamorized “earn”; no sales for a chance at unknown‑value NFTs; no on‑device mining. (android-developers.googleblog.com)
AdAttributionKit (iOS 17.4+/18): install + re‑engagement postbacks with conversion windows; plan UA measurement accordingly. (developer.apple.com)
Telegram Stars → TON and ad discounts: compliant IAP flows in Mini Apps with developer withdrawal to TON or subsidized ads. (core.telegram.org)
Immutable zkEVM gaming stack: EVM‑equivalent, single‑block finality at ~2s, consolidating Immutable X into a unified chain in 2025–2026. (immutable.com)

CTA (personalized) If you have a Unity or Unreal build that’s currently blocked by an App Store rejection (3.1/3.1.1 NFTs or U.S. EPLE placement) or a Google Play “blockchain‑based content” flag, send us:

The exact reviewer message(s),
A TestFlight or Play Internal Testing link,
Your monetization map (one pager).

We’ll return a red‑lined compliance plan, price ladder, wallet/AA blueprint, and a submission‑ready checklist within 5 business days—then implement it end‑to‑end. Start here: our blockchain integration.

Bold money phrases to remember

“Passkeys cut wallet drop‑off; protect your ARPDAU.”
“Design for Apple’s 27% EPLE rule, not around it.”
“Session keys = gameplay without signature pop‑ups.”
“Telegram Stars seed growth; native apps harvest LTV.”
“Immutable zkEVM gives you finality your live‑ops can trust.”

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

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