Dual-slot mode

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Dual-slot mode (Japanese: ダブルスロット Double-Slot), often called the Dongle method, is one of the many ways that players of Pokémon Diamond, Pearl, and Platinum can obtain Pokémon that are outside of the Sinnoh Pokédex, especially Pokémon that are exclusive to other regions, by using the GBA games of the series as dongles for the DS games. However, due to the removal of the GBA slot, dual-slot mode is not available if using a Nintendo DSi or a Nintendo 3DS.

The majority of Pokémon that can be obtained in this way are in some way version-exclusive Pokémon to one of the Generation III games. With one of the five Game Boy Advance games inserted into the GBA slot of a Nintendo DS while playing either Diamond or Pearl, players will be able to find Pokémon not otherwise available in Generation IV in certain areas of Sinnoh, but only after they have unlocked the ability to use Pal Park as well. One does not need to have the game in their GBA slot the whole time; one just needs to have it in at the main screen, at which time one can simply take the cartridge out, as long as one doesn't turn the power off before catching the Pokémon.

Unlike Pal Park, dual-slot mode is not language locked; any language Generation III game can be in the bottom slot for any language Generation IV game, meaning that a Japanese FireRed can activate wild Elekid in the Valley Windworks in an English Diamond, while an English Emerald can activate wild Teddiursa on Route 211 in a Japanese Platinum.

All of these Pokémon have an 8% chance of appearing in the listed area when the correct GBA game is inserted, except in areas where two appear at once for the same game (the rate is then 4% for each).

Pokémon Dream Radar has a similar feature that allows players to catch a Generation IV version mascot with its Hidden Ability in extensions unlocked by putting the Game Card of the corresponding game into the slot on the Nintendo 3DS.

List of Pokémon available using dual-slot mode

Game in the GBA Slot
Pokémon Location Game
Ruby
  Seedot Routes 203, 204 and 210 (South), Eterna Forest D P Pt
  Nuzleaf Routes 210 (South) and 229 D P Pt
  Mawile Iron Island D P Pt
  Zangoose Routes 208 and 210 (North) D P Pt
  Solrock Lake Verity, Lake Acuity, Lake Valor, Mt. Coronet, Sendoff Spring, Turnback Cave D P Pt
Sapphire
  Lotad Routes 203, 204, 205, and 212 (South) D P Pt
  Lombre Routes 212 (South) and 229 D P Pt
  Sableye Iron Island D P Pt
  Seviper Routes 208 and 210 (North) D P Pt
  Lunatone Lake Verity, Lake Acuity, Lake Valor, Mt. Coronet, Sendoff Spring, Turnback Cave D P Pt
Emerald
  Teddiursa Routes 211 and 217, Lake Acuity, Acuity Lakefront D P Pt
  Ursaring Routes 216 and 217, Lake Acuity D P Pt
  Pineco Eterna Forest, Routes 203, 204, 210 (South) and 229 D P Pt
  Gligar Stark Mountain, Routes 206, 207, 214, 215, and 227 D P Pt
  Shuckle Route 224 D P Pt
FireRed
  Caterpie Route 204 D P Pt
  Metapod Eterna Forest D P Pt
  Ekans Route 212 (South) D P Pt
  Arbok Great Marsh D P Pt
  Growlithe Routes 201 and 202 D P Pt
  Elekid Route 205, Valley Windworks D P Pt
LeafGreen
  Weedle Route 204 D P Pt
  Kakuna Eterna Forest D P Pt
  Sandshrew Wayward Cave D P Pt
  Sandslash Route 228 D P Pt
  Vulpix Routes 209 and 214 D P Pt
  Magby Route 227, Stark Mountain D P Pt
Any Generation III game
  Haunter Old Chateau D P Pt
  Gengar Old Chateau D P Pt

See also


Inter-generational transfer
Gen I Time CapsulePoké TransporterBank
Gen II
Gen III Dual-slot modePal Park
Gen IV Dual-slot modePal ParkPoké TransferRelocator
Gen V Poké TransferRelocatorPoké TransporterBank
Gen VI Poké TransporterBank
Gen VII Poké TransporterBankGO ParkHOME
Gen VIII BankHOMEGO Transporter
Gen IX


Communications media
Gen I Game Link CableTransfer Pak3DS Wireless (VC)
Gen II  Game Link CableInfraredTransfer Pak
Mobile Game Boy Adapter3DS Wireless (VC)
Gen III Game Link CableWireless AdapterDual-slot mode
Gen IV DS WirelessWi-FiDual-slot modeInfrared
Gen V DS WirelessWi-FiInfrared
Gen VI 3DS WirelessNintendo NetworkInfraredStreetPassSpotPass
Gen VII 3DS Wireless/Switch WirelessNintendo Network
InfraredNintendo Switch OnlineBluetooth
Gen VIII Switch WirelessNintendo Switch Online
Gen IX Switch WirelessNintendo Switch Online


  This game mechanic article is part of Project Games, a Bulbapedia project that aims to write comprehensive articles on the Pokémon games.