The GBA slot is a nice little reward to the long-time fans. By using Leaf Green, Fire Red, Ruby, Sapphire and Emerald in this way, Nintendo is making the most of the pool of games in the past. The slot is also used to import Pokemon from the GBA generation into the Pal Park, but that’s another story for another guide. By putting in the GBA cart with Pokemon Diamond/Pearl/Platinum, you will find a greater variety of Pokemon appearing. The town name that appears after the route means that you want to be the one side of the route close to that town. This guide will be updated with the U.S. release of Platinum.
Fire Red:
201 & 202 – Growlithe
204 (Jubilife City side) – Caterpie
205 (Floaroma Town) – Elekid
212 (Pastoria City) – Ekans
Lake Verity – Bibarel & Staravia
Valley Windworks – Elekid
Eterna Forest – Metapod
Old Chaetae (TV Room) – Haunter & Gengar
Old Chaetae – Haunter
Pastoria Great Marsh – Arbok
Leaf Green:
204 (Jubilife City side) – Caterpie
209 – Vulpix
214 – Vulpix
227 – Magby
228 – Sandslash
Lake Verity – Bibarel & Staravia
Eterna Forest – Kakuna
Old Chaetae (TV Room) – Haunter & Gengar
Old Chaetae – Haunter
Wayward Cave – Sandshrew
Stark Mountain Exterior – Magby
Stark Mountain Interior – Magby
Ruby:
203 – Seedot
204 (Jubilife City side) – Seedot
204 (Floaroma Town) – Seedot
208 – Zangoose
210 (Solaceon Town) – Seedot & Nuzleaf
210 (Celestic Town) – Zangoose
229 – Nuzleaf
Lake Verity – Solrock
Eterna Forest – Seedot
Old Chaetae (TV Room) – Haunter & Gengar
Old Chaetae – Haunter
Mt. Coronet – Solrock
Iron Island – Mawile
Lake Valor – Solrock
Lake Acuity – Solrock
Sendoff Spring – Solrock
Turnback Cave – Solrock
Sapphire:
203 – Lotad
204 (Jubilife City side) – Lotad
204 (Floaroma Town) – Lotad
205 (Eterna City) – Lotad
208 – Seviper
210 (Celestic Town) – Seviper
212 – Lombre & Lotad
229 – Lombre
Lake Verity – Lunatone
Old Chaetae (TV Room) – Haunter & Gengar
Old Chaetae – Haunter
Mt. Coronet – Lunatone
Iron Island – Sableye
Lake Valor – Lunatone
Lake Acuity – Lunatone
Sendoff Spring – Lunatone
Turnback Cave – Lunatone
Emerald:
203 – Pineco
204 (Jubilife City side) – Pineco
204 (Floaroma Town) – Pineco
206 – Gligar
207 – Gligar
210 (Solaceon Town) – Pineco
211 – Teddiursa
214 – Gligar
215 – Gligar
216 – Ursaring
217 – Ursaring
224 – Shuckle
227 – Gligar
229 – Pinec
Lake Verity – Bibarel & Staravia
Eterna Forest – Pineco
Old Chaetae (TV Room) – Haunter & Gengar
Old Chaetae – Haunter
Lake Acuity – Ursaring
Acuity Lakefront – Teddiursa
Stark Mountain Exterior – Gligar