First Koin item
Start with one item and understand the complete player journey before building a larger shop.
AI game IAP guide · Direct Koin purchases · No subscription
Add In-Game Purchases to AI-Generated Games with Koin
Choose a focused guide for your game, platform, team, or players. Each page gives you a practical item example and a complete prompt for generating the purchase flow in SEELE.
Create this game flow
Choose the right starting point
Playable UX test
Try the offer, confirmation, delivery, cancelling the action, and recovery inside a working game.
Clear product boundary
Separate the browser prototype from native billing, security, refunds, and financial reporting.
Optional Koin item ideas
Cosmetic
A skin, trail, theme, or decoration that changes appearance without changing competitive power.
Content unlock
A bonus level, side quest, character, or chapter that extends a complete core game.
Consumable
A retry or boost with its quantity, duration, and activation rules shown before purchase.
Convenience item
Inventory space or a preset slot that helps without making ordinary play frustrating.
Three principles for the first version
Start with the player experience
Build the game activity before adding the offer so players have enough context to judge its value.
Use one source of truth
Keep the item name, benefit, duration, ownership rule, and Koin price consistent across every screen.
Learn from an unassisted playtest
Ask a new player to find the price, decline, complete the purchase, and locate the delivered item without coaching.
Build the first purchase flow
1. Choose a guide
Start with the game, platform, workflow, or audience closest to your project.
Result: One focused direction
2. Define one item
Write its benefit, duration or quantity, ownership rule, and full price in Koin.
Result: A clear offer
3. Generate the player journey
Show preview, balance, confirmation, a player cancellation, success, and delivery.
Result: A playable purchase flow
4. Test recovery
Try a Koin shortage, interruption, repeated input, and reload.
Result: Understandable failure states
5. Refine before expanding
Fix unclear wording or behavior before adding another item.
Result: A stronger first version
Start with this SEELE prompt
Complete starter prompt
Create a browser-playable game with one voluntary game item priced directly in Koin. Show a preview, exact price, Koin balance now, confirm, cancel, not enough Koin, success, visible delivery, and reload behavior. Keep the complete game playable without buying the item. Do not add subscriptions or payment reporting.
What to test before expanding
- The game is enjoyable without the item.
- The item and specific Koin amount appear before the player confirms.
- The player can cancel without losing progress.
- Success shows precisely what was delivered.
- An insufficient balance and reload have clear outcomes.
- Native billing and financial reporting are not implied.
What this prototype does not include
- This guide uses a direct Koin transaction for one optional game item. It does not create a subscription or recurring charge.
- The result is a browser-based playable build. Native billing, identity, durable entitlements, security, refunds, and store approval need separate implementation.
- SEELE does not provide payment analytics, tax tools, payout reports, or guaranteed revenue through this flow.
Frequently asked questions
What can players buy with Koin?
Prototype cosmetics, content unlocks, consumables, and optional convenience items.
Is this a subscription?
No. The player spends Koin directly on one named item or unlock.
What happens if the player cancels?
Return to the same game state without spending Koin or delivering the item.
What if the Koin balance is too low?
Explain the shortage, preserve progress, and do not deliver the item.
Does this include payment or revenue reports?
No. It covers the player-facing purchase experience, not financial reporting.
Is the prototype ready for a native store?
No. Native billing, security, refunds, policy, and submission remain separate work.
Build your first Koin item
Open the complete prompt in SEELE, adjust the item and Koin price, then generate a playable version you can test.
Open this prompt in Workspace