Pokémon FireRed - Pokémon Odyssey [GBA]

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Introduction
Long story short: this is a crossover project featuring Pokémon, Etrian Odyssey and Made in Abyss.
It's a dungeon-crawler with a story-driven focus, but don't worry, you don't need to be familiar with Etrian Odyssey or Made in Abyss to enjoy the game to the fullest!

By PacoScarso_

Story Introduction
On an island in the middle of the sea stands a massive maze knows as the "Yggdrasil Labyrinth", which has been attracting adventurers from all over the world for years.
No one knows how deep it goes, or if there's anything at its end.
Some say there's a treasure of immeasurable value hidden within, while others claim the remnants of a lost civilization lie there.
In the game you'll play as Nyx, a young adventurer who joins the guild of Talrega with the goal of unraveling the Labyrinth's mysteries.
But something goes terribly wrong…

Game Features:
► A brand-new story and region to explore;
► Double battles only, unless you only have one Pokémon;
► No Gym Leaders, evil teams, or Elite Four—it's all about exploration!
► All Pokémon have been rebalanced;
► Introducing new regional forms: the Etrian Variants!
► Available Pokémon: Generations 1–3 and cross-gen evolutions;
► Multiple difficulty levels and soft level caps;
► EV/IV screen, nature colors, and more;
► No healing items during battle;
► Etrian Odyssey-inspired features: Mining and Gathering points, Naval Exploration, Shop Upgrades, and FOEs;
► A variety of sidequests with a dedicated sidequest menu;
► Wonder Trade functionality;
► Every Pokémon in the game has perfect 31 IVs, so no need to farm or breed for a decent one;
► No EVs gained from defeating Pokémon, you'll need Power Items or Vitamins (at a reduced price) to boost them;
► Change your Pokémon's Nature and Ability through in-game functions;
► Exp. Share mechanic similar to Gen VI;
► A brand-new soundtrack!



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Patch Information & Download

► Base ➜ Fire Red (U) 1.0
► Status ➜ COMPLETE (v4.1.1)
► Language ➜ English

► Latest (ENG): Pokémon Odyssey COMPLETE (v4.1.1)
This is just a .ups patch file. In order to play this game you'll have to apply this patch on a Pokémon Fire Red (U) (Squirrels) rom.

Links & Documentation
► Discord ➜ Click here
► Wild encounters and Items ➜ Click here
► Pokémon stats, learnset, Etrian Variants etc. ➜ Click here
► Level Caps, Bosses, Naval Exploration map, Sidequests ➜ Click here

► Romhack Thread ➜ Click here
 
Last edited:
Version 4.0.1
- Fixed some dialogues
- Fixed some movement permissions
- Fixed a bug regarding the Lavender Town ghost encounter in the 8th Stratum
- Fixed an issue in Jagged Mountain
- Fixed an issue with the Dex not showing the wild mons in the Sandy Caves
- Fixed an issue that was preventing Vulpix from appearing in the wonder trade
- Fixed an issue with Octazooka and Needle Arm's priority
- Fixed an issue with Call: Owl's effect
- Removed the double confirmation from MementoVitae

Patch Link: https://www.mediafire.com/file/1tfmczix0f2ptzr/Pokemon_Odyssey_-_Beta_3.0.zip/file
 
Version 4.0.2
  • Fixed some dialogues;
  • Fixed some random freeze instances and glitches after beating some trainers;
  • Removed the Friendship-increasing berry shop at the guild. Now there's a NPC that increases the friendship of your mons to its max value;
  • Fixed a bug that was preventing Leafeon, Glaceon and Yggdreon to be registered in the Dex. It's not retroactive, so you'll have to evolve them again;
  • Added "Lullaby" to the sound moves list;
  • Added "Expert Belt" on Faraway Island;
  • You can now register unobtainable mons in the Dex:
  • B.B. Mawile & B.B. Kecleon -> Read Silva's notes in his Lab in Etria during the postgame.
    Lords of the Sea -> Read Napier's notes in her shop in Aqua Resort
  • Jigglypuff and Wigglytuff now learn Rotten Egg at level 10 and Lullaby at level 30 (Lullaby was too strong during early game);
  • The key item "Quest Log" has been renamed to "Story Log";
  • Mawile has been buffed:
    • HP: 60 -> 80,
    • Speed: 50 -> 60,
  • Shift Gear has been added to Mawile's learnset;
  • Camerupt has been rebalanced:
    • HP: 80 -> 90,
    • Atk: 100 -> 80,
    • Speed: 50 -> 60,
  • Slaking has been nerfed:
    • HP: 150 -> 140,
    • Atk: 140 -> 120,
    • Def: 100 -> 90,
  • "Call: Allies" BP has been nerfed: 70 -> 50;
  • Replaced Spearow and Fearow's Defiant with Rock Head;
  • New sprites for Spearow, Fearow and Feraligatr (credits to Lodestar195)

Version 4.0.3
  • Fixed a crash Issue during an event with Olympia in the 4th Stratum;,
  • Fixed an Issue with Expert Belt's chest on Faraway Island.


Patch Link:
 
>No IV RNG nonsense or accidentally farming the wrong EVs, and changeable natures and abilities
>EO and MIA
>Boss encounters aren't humans with nothing meaningful and mechanically unique going for them except their team ace
>No singles
Aight, you haven't just made pokemon bearable. You have my interest.
 
Last edited:
Etrian Odyssey, you say? I can't wait to try it!
 
Version 4.1.1
  • Fixed an issue with the battle against Olympia in Etria where the teams for Normal and Hard mode were swapped;
  • Fixed the issue with Triple Axel damage. It should now scale correctly;
  • Fixed an issue where some F.O.E.s would not respawn when resting at the Guild (they respawned correctly when resting elsewhere);
  • Added "Fake Out" to Politoed's learnset;
  • Added "Weather Ball" to Roserade's learnset;
  • Buffed "Iron Tail" accuracy from 75 to 85;
  • Fixed some typos.

Patch Link: https://www.mediafire.com/file/1lka2b8zwav7c6j/Pokémon_Odyssey_COMPLETE_v4.1_(EXPANDED_BAG).zip/file
 

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