Transfer 3DS Coins to Club Nintendo? Impossible — Club Nintendo Discontinued 2015

You can't. Club Nintendo was discontinued in 2015 and replaced by My Nintendo (different reward system).

• 3DS Coins (Play Coins) were earned by walking with the 3DS in sleep mode.
• They were only redeemable in the 3DS eShop for themes, game discounts, or exclusive content.
• They never transferred to Club Nintendo or My Nintendo.

Use Your Play Coins

• Spend them in the 3DS eShop before they potentially expire or the shop closes further.
• Check for new rewards periodically.

If you have a My Nintendo account, link it to your Nintendo Network ID for current rewards — but Play Coins stay on the 3DS.