All StoneAge Idle Adventure Coupon Codes March 2026

How to claim StoneAge Idle Adventure rewards

1. 1(For iOS users) Go to https://coupon.netmarble.com/stonkey and enter your code/user ID
2. 2(For Android) Launch StoneAge Idle Adventure and complete the initial tutorial until you have free control of the main UI.
3. 3Tap the Menu icon located on the game interface.
4. 4Click on the Settings gear icon.
5. 5Select the Account tab from the settings menu.
6. 6Tap the Redeem Coupon button to open the text input window.
7. 7Enter your active promo code exactly as shown and hit Use to claim your rewards via the in-game mailbox.

Common code errors in StoneAge Idle Adventure

StoneAge Idle Adventure codes can stop working at any time. Here are the most common reasons a code might fail and how to fix each one:

• The code has expired. Codes are often time-limited. Some expire within 24 hours of release. If a code isn’t working, it may have already expired. We mark codes as expired as soon as we confirm them.
• Codes are case-sensitive. This game enforces exact capitalization, so "FreeGems" won’t work if typed as "FREEGEMS". Copy the code directly from our list to avoid mistakes.
• Already redeemed. For StoneAge Idle Adventure, each code can only be used once per account. If you’ve already claimed it, it won’t work again, even after reinstalling or updating.
• Reach level 15 and finish the tutorial. The code redemption menu doesn’t unlock until you complete the tutorial and reach at least level 15. Progress through the early game first, then try again.
• Platform or region mismatch. This game is available on Android, iOS. Some codes only work on a specific platform or region, so make sure the code is intended for yours.
• Check your in-game mail. Rewards don’t always appear on screen right away. Check your in-game mailbox, gift center, or inbox after redeeming, since items are often delivered there instead.