Little help.
Big comebacks.

01 / Accounts & connection

A familiar face.
A connected account.

Connect Game Center on iPhone or iPad

1. Check that you are signed in under Settings > Game Center on your device.
2. Open Gemmoki, then Monster Shop > Account. An existing Game Center session can connect automatically in updated builds. If interaction is needed, choose Connect Account.
3. If connection fails, check your internet connection and retry. Being signed in to Game Center and connecting that identity to the game are separate steps.

Android uses Google Play Games. You never need to send us your Apple or Google password. Local AI and Pass Around matches do not require a connected platform account.

Play with a friend

Choose Play With Friends. One player creates a room and shares its private room code with the other player, who joins using that code. Both players need a working internet connection. Share room codes only with people you intend to play with.

If a room cannot connect, make sure both players have the latest available build and try a new room. Include both app versions when contacting support.

02 / Your monster collection

More monsters.
Less guesswork.

Nine monsters are included. Twelve additional monsters are optional, individual, permanent purchases. They are non-consumable: each purchased monster is unlocked, not spent after a match. There are no subscriptions, loot boxes or advertising.

Where do prices come from?

Your platform storefront supplies the current price and currency. Prices and availability can vary by region. If the store cannot fetch a verified price, the app will not offer an unpriced purchase. Check your connection, confirm that your device can access its storefront, and retry the store connection.

Restore an owned monster

1. Use the App Store or Google Play account that originally purchased the monster.
2. In Monster Shop > Account, connect Game Center or Google Play Games if needed. This links your game profile; it is separate from your storefront payment account.
3. Open Monster Shop and select Restore, beside Account.
4. Allow ownership verification to finish. If verification is temporarily unavailable, retry Restore instead of buying the same monster again.

If access is still missing, email us with the monster name, app version and a description of the problem. Do not send full payment details or purchase tokens.

Apple and Google handle payments and refund requests under their own rules. Deleting a game account does not issue a refund or delete your platform account.

03 / Keep it friendly

Good rivals.
Respectful matches.

Choose a respectful game name without personal contact information. Updated builds limit custom names to 15 ASCII letters or numbers, with no spaces or special characters. A filter checks common inappropriate English terms and disguised spellings. No automated filter catches every offensive name or every language.

Report an opponent

1. Open Settings > Player Safety during a match, or Monster Shop > Account > Player Safety.
2. Choose Email Report to prepare a message about the most recent verified opponent. Review the game name and game-account identifier in the draft, describe the issue, then send it.
3. If no email app is configured, choose Copy Report Details and send the information to our support address from your preferred mail service.

The app does not send the email for you. Include enough context for us to investigate, but not someone else's unrelated personal information. Gemmoki does not provide public chat, photo sharing or a public content feed.

Block an opponent

In Player Safety, choose Block Opponent and confirm. This prevents future connections with that verified game account on this device and leaves a current online match. Changing a nickname does not remove the block.

Blocks are stored locally, not synced across devices. You can clear the device block list from Player Safety. Blocking does not automatically send a report.

04 / Back to the board

Small moves.
A fresh start.

For offline play, choose an AI match or Pass Around. Online matches and store services need an internet connection. Not every swap has to create a match: you can also position gems for your next turn.

Something not working?

Install the latest available update and reopen the app. If a problem continues, tell us what you tapped, what you expected, and what happened instead. For a crash, include the approximate time and whether it happened during launch, a match or a purchase.

Do not delete your game account or clear valuable progress as a troubleshooting step. Contact us first if you are unsure.

Your information. Your choices.

Privacy, without
the hide-and-seek.

Read how game identities, online matches, purchases and optional support reports are handled. You can also request deletion without reinstalling the app.