Make value readable without social pressure
State the item and Koin amount plainly, separate confirmation from high-frequency controls, and remove popularity, exclusion, or countdown language that turns identity and peer attention into pressure. Review age context and shared-account assumptions with an adult product owner.
Run a price-comprehension check
Give a new player the offer without explanation and ask them to name the selected item, full Koin amount, available balance, expected balance afterward, quantity or duration, and ownership rule. Let them decline, then repeat with insufficient Koin and a successful choice. Review every place the value appears and remove crossed-out amounts, vague premium labels, unsupported real-currency comparisons, or urgency that distracts from the final cost. The wording on the preview, confirmation, success message, and owned view must describe the same thing. Reopen the game and verify that the balance and ownership shown to the player still match the one transaction they approved.
Keep price and balance together
Place the exact Koin amount beside the balance before spending and show the expected remaining balance prior to confirming. For teen players, the experience must use readable value, age-aware presentation, and strong purchase confirmation.
Explain duration and ownership
State whether the item is permanent, consumed on use, limited by quantity, or active for a fixed time. For teen players, the experience must use readable value, age-aware presentation, and strong purchase confirmation.
Remove misleading price signals
Avoid fake urgency, crossed-out prices, unsupported currency comparisons, and labels that hide the final Koin amount. For teen players, the experience must use readable value, age-aware presentation, and strong purchase confirmation.