Phase 11 section

Pokemon FireRed and LeafGreen Birth Island and Deoxys Walkthrough

Birth Island and Deoxys section for the FireRed and LeafGreen walkthrough with source-backed wild Pokemon, trainers, items, hidden items, bosses, and route notes.

By Damodar Sharma Updated June 24, 2026 Walkthrough

Use the AuroraTicket event route, solve the triangle puzzle, and battle Deoxys. This page is a standalone section for Phase 11: Event Islands + Completion, with FireRed/LeafGreen source data for encounters, trainers, items, hidden items, and boss routing.

Source maps

Birth Island Harbor and Birth Island Exterior.

Wild rows2 Trainers0 Items0

Route plan

This is event-only content. The puzzle requires touching the triangle in the shortest path repeatedly until Deoxys appears.

Route Notes

The event script sets Deoxys at Lv. 30. FireRed displays Attack Forme and LeafGreen displays Defense Forme, while normal retail saves cannot reach the island without AuroraTicket distribution or equivalent access.

Wild Pokemon

Version

Method Filter tables

Each area below has its own table, split by encounter method. Standard wild rows merge every slot for a species into one line with a combined rate, and FireRed/LeafGreen exclusives are marked with FR/LG game chips; there is no time-of-day split in these remakes. Underlying slot odds: grass and cave 20/20/10/10/10/10/5/5/4/4/1/1; Surf and Rock Smash 60/30/5/4/1; Old Rod 70/30; Good Rod 60/20/20; Super Rod 40/40/15/4/1. Gift, static, trade, and prize Pokemon keep their own labeled rows.

Birth Island

Birth Island wild Pokemon by method, games, levels, encounter rates, and requirements
Pokémon	Games	Levels	Rate	Notes
AuroraTicket static
Deoxys	Event-only	30	Static	Solve the triangle puzzle. FireRed displays Attack Forme; LeafGreen displays Defense Forme. Not normally reachable without the event ticket.

Birth Island Exterior

Birth Island Exterior wild Pokemon by method, games, levels, encounter rates, and requirements
Pokémon	Games	Levels	Rate	Notes
Static encounter
Deoxys	FRLG	30	Static	One-time scripted encounter in Birth Island Exterior.

Trainers

No regular trainers are sourced for this section.

Items And Hidden Items

No visible, hidden, or scripted item rows are sourced for this section.

Boss Strategy

No major boss card is assigned to this section.

Completion Checklist

Clear the route plan for Birth Island and Deoxys before moving to the next section.
Check the wild table for FireRed/LeafGreen version splits, rod methods, Surf, Rock Smash, static Pokemon, gifts, trades, and event-only rows when present.
Defeat or intentionally skip optional trainers; use VS Seeker notes where rematches are available.
Sweep visible and hidden item rows, including key items, HMs, TMs, berries, fossils, and scripted gifts.
Review boss cards and heal before any Rival, Gym Leader, Rocket Admin, Elite Four, Champion, or legendary encounter listed above.

Sources

pret/pokefirered: src/data/wild_encounters.json, src/data/trainers.h, src/data/trainer_parties.h, data/maps/*/map.json, data/maps/*/scripts.inc, data/scripts/item_ball_scripts.inc, and graphics/trainers/front_pics.
Encounter odds use the FR/LG slot rates: land 20/20/10/10/10/10/5/5/4/4/1/1, Surf and Rock Smash 60/30/5/4/1, Old Rod 70/30, Good Rod 60/20/20, and Super Rod 40/40/15/4/1.
Generation III mechanics apply throughout: abilities, natures, held items, double battles, and post-game National Dex data are active in these remakes.