Download Pre-patched Pokemon The Unown King GBA Rom

Creator: Clessidra
Version: v1.0.0
Updated: November 5, 2025
Language: English
Progress: Playable Demo

Pokemon The Unown King is a GBA Rom created by Clessidra, available in English. The current progress is Playable Demo. Latest version: v1.0.0. It was last updated on November 5, 2025 and is now available to download.

Description

Have you heard about the mighty Rey Unown? Do you know about the curse of the Unown King? Well, this Unown King is neither of those.
Pokémon - The Unown King is one of the contender for the 2nd Team Aqua's ROM-Hacking Competition, which demanded that submissions followed the given theme of myth.

This is a decomp project using pokeemerald-expansion as a base.

Game Progress

No data available.

Plot & Lore

After creating time, space, and everything that a world needs for its existence, Arceus created Mew in order to populate the universe. Mew could split itself in two, creating more and more life forms, but Arceus wanted more variety. Therefore, Arceus created the Unown species as well.

The Unown's waves, combined in various ways, transformed Mew into completely new beings, but in order to bring balance to the ecosystems, the Unown needed help. Some entity had to coordinate them, thus Arceus created the Unown King, whose instructions would eventually bring life to the species that we know to this day.

For some reason, however, the Unown King is said to have been sealed inside a temple, which is simply referred to as the Temple of the Unown King. It's unclear why, because its story was never written.

… or was it?

Apparently, the temple itself is home to inscriptions that allegedly tell the rest of the story, but unfortunately nobody has been able to read them. Will you be the first to decypher them and learn the truth?

Find all the Unown scattered inside (and outside!) the Temple of the Unown King and find out what those inscriptions say with their help!
Of course, you'll

Known Bugs

If a wild Pokémon's item is stolen with Thief and the Pokémon is then caught, the Pokémon will have another one of the same item after being caught, allowing to obtain two of the same item for the price of one.
If an enemy Pokémon with the ability Illusion (which isn't found in game) or Unknown (dangerous spoiler territory) transforms back into its species and faints, the sliding down effect won't look correct because some portion of it will still be visible after sinking.
Using Dive outside of battle may lower the background music's volume until the music changes, e.g. a battle occours or the player dismounts.
The audio's ear-rape factor increases slightly over time, albeit not too much. This however was only experienced sometimes after speeding up emulation multiple times.
On mGBA, after idling for about a minute without entrying any input, square waves may become almost silent for a while, then sound correct again.

Additional Notes

Version 1.0.0 is the exact version that participated in the competition. I label it as finished, but content was cut due to time constraints; this includes custom battle backgrounds and the true ending, which are all planned to be added in version 2.0.0.

My playtest clocked at around 10 in-game hours, or less out-game time considering I sped up emulation frequently. Version 1.0.0 includes no Repels. However, there is a rather obscure way of reducing the encounter rate. Too obscure, perhaps. All the testing was carried out on the mGBA emulator running on a Windows 10 machine.

Change Log

No updates listed.

Features

This ROM-Hack might appear grindy at first glance. Depending on how you approach it, it can be as well as not. I promise, the cheese factor is high.
After obtaining each HM, the corresponding move can be used outside of battle even if a Pokémon hasn't learned it, as long as it CAN learn it.
Some bosses, instead of Trainers with teams, consist in a single Pokémon with a thick health bar.
The overworld is pretty obviously inspired from the Gen 5 games.
Almost the entire soundtrack consists of remixed tracks taken from Final Fantasy VIII.
Reading what NPCs have to say can save your behind, particularly in the early game.
There are about 100 obtainable Pokémon, all but a couple from generations 1 through 5.