These terms cover STK Smash and the other EX STK games and tools: PLAY STK, ZUMORA Marble STK, CHESS STK, Magic Match STK and Scanner STK. Product-specific rules apply only to the named product.
1. Acceptable use
Use the apps lawfully and for their intended purpose. Attempts to interfere with app operation, manipulate progress, automate activity unfairly, exploit reward systems, or abuse multiple accounts may result in restrictions.
2. Gameplay and progress
Game content, difficulty, levels, challenges, features and availability may change as the products are updated.
3. PLAY STK points and rewards
PLAY STK points are reward units inside the service. Current redemption options, eligibility requirements, conversion information and minimum redemption requirements are displayed in the app and may change over time.
4. PLAY STK challenges and claims
Challenge progress and reward claims may be subject to eligibility and verification. A completed reward may only be claimed as permitted by the app. Duplicate or manipulated claims can be rejected.
5. PLAY STK payouts and rewards
Eligible payout or reward requests may require review. Processing time can vary by method, verification status and technical or compliance requirements.
6. Accounts and security
Keep your account credentials secure and provide accurate information when using account features or requesting support. CHESS STK account deletion is available inside the app. Deleting the account may remove access to associated gameplay, customisation and items. Store purchase records and any applicable refund rights are governed separately by the relevant store and applicable law.
7. Updates to these terms
These terms may be updated when app features, rewards, security requirements or applicable legal obligations change.
8. Contact
Questions: contact@exstk.com · exstk.com.
9. CHESS STK purchases and virtual items
CHESS STK offers in-app purchases through Apple App Store on iOS and Google Play on Android. Review the product description and price shown by the store before confirming a purchase. Purchased content and cosmetic rewards are intended for use inside CHESS STK; they are distinct from PLAY STK cash rewards. Purchase availability and access depend on the relevant product and platform. For missing items, contact STK with the transaction reference, not payment card details.
10. Purchase support and refund requests
Refund eligibility depends on the relevant store’s policies and applicable law. For Apple purchases, consult Apple refund guidance. For Google Play, consult Google Play refund guidance. Account deletion, data requests and uninstalling an app do not automatically request a refund.
11. Advertising
CHESS STK and Magic Match STK contain advertising delivered through Google AdMob. Ad availability and content may vary. Advertising data processing is explained in our Privacy Policy. Do not manipulate ad interactions or use automated activity to exploit rewards.
12. Magic Match STK
Magic Match STK is a match-3 game available without an STK account. It contains ads and offers in-app purchases through Apple App Store on iOS and Google Play on Android. Review the description and price in the store before confirming a purchase. Boosters and rewards shown in the game are virtual game items, not PLAY STK cash rewards. Feature availability, item use and access depend on the game and platform. For missing purchases, contact STK with the store transaction reference; do not send payment card details. For privacy or data requests, use our deletion and data request page.
13. ZUMORA Marble STK
Gaming connections and saved progress depend on the relevant platform and enabled features. Protect your Google or Game Center account and manage its settings with the provider. ZUMORA contains advertising and purchases through the relevant Apple or Google store. Review product descriptions and prices before confirming a purchase. For game data or missing purchases, contact STK with a player or transaction reference.
14. Scanner STK documents and cloud storage
Scanner STK supports accounts, document scanning, PDF workflows, signatures and file organisation. You control the files you import, select, share and store in your personal cloud account. Keep copies of important documents and manage cloud access and storage through your provider. Scanner STK contains advertising and Apple or Google store purchases. A signature tool does not by itself establish that a document meets every applicable signature requirement.
15. Chat STK and selected document content
Chat STK uses Groq through STK’s Cloudflare server to answer questions about content you choose. The Privacy Policy explains what is transmitted for a message, image or PDF. Only submit content you are permitted and intend to share for processing. AI answers can contain mistakes; compare them with the original document before relying on them. File storage and AI processing are distinct.
16. STK Smash accounts and gameplay
Use Apple or Google sign-in to access the supported STK Smash account and saved-progress features. Keep your platform account secure. Gameplay progress, rewards and country-ranking information support the game experience. Do not manipulate rankings, game records, reward claims or ad interactions. Notifications about events and characters are optional and can be switched off through device settings.
17. STK Smash purchases and data requests
STK Smash contains Google AdMob advertising and offers in-app purchases through Apple App Store and Google Play on the relevant platform. Check the item description and price before purchase. Store refund rules and applicable law govern refund eligibility. For account deletion, use the STK Smash deletion request. Limited transaction, legal and security records may remain as described in the game’s Privacy Policy.