NDUO Support

Contact: nduoemu.support@gmail.com ยท X: @NDUOEMu
We usually answer within 2 business days. English or Spanish.

How do I add games?

NDUO does not include or download games. Put game files you own (.nds, .gba, .gb, .gbc) in the Files app, for example in Downloads or iCloud Drive. In NDUO, tap Add Games and pick the files, or pick a whole folder. NDUO only looks for new games when you tap Find new games now.

Which iPhones work best?

NDUO needs iOS 16 or later. It's best on iPhone 13 or newer. On iPhone 15 Pro and newer, 3D games run at 3x resolution by default. Game Boy, Game Boy Color and GBA games run well on every supported iPhone. Low Power Mode can limit games to 30 fps.

A game doesn't work right

DS emulation is still improving, and some games may not run, or may not run perfectly yet. Use Report a game problem in the app, or email us the game title, what happens, and your iPhone model. Please don't send game files.

Do I need a BIOS?

No. NDUO has a built-in BIOS. Pro users can optionally add a BIOS dumped from their own console.

Purchases

NDUO Plus and NDUO Pro are one-time purchases with no subscription. On a new iPhone, tap Restore Purchases in the app. Refunds are handled by Apple: reportaproblem.apple.com.

Privacy

Your games and saves stay on your iPhone. See the privacy policy.

NDUO is an independent app and isn't affiliated with, endorsed by or sponsored by Nintendo.