American DSi Playing UK (PAL) Games? No—Region Locked, But Workarounds Exist

No. DSi is region-locked:

• US (NTSC-U) DSi only runs NTSC-U cartridges.
• UK (PAL) cartridges are physically identical but digitally signed for PAL region—console rejects them.

Options

• Buy US version of the game.
• Flashcart (R4i, Ace3DS) on hacked DSi/3DS – runs out-of-region ROMs. Piracy risk / TOS violation.
• Homebrew launcher (via Memory Pit or Flipnote exploits) → run TWiLight Menu++ for region-free. Still requires owned ROMs to be legal.

Safest: import the correct region cartridge.